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    Nature

    Completely Arbortrary – Completely Arbortrary

    Tree advocate Casey Clapp and his tree-curious friend Alex Crowson bring you a podcast about trees and other related topics. History, culture, art, religion, science… trees affect and are affected by everything. Join Casey and Alex on their silly and educational journey to prove it.

    Advertise

    Copyright: © Arbortrary Media LLC

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    Latest Episodes:
    NOT A MANGO, DO NOT EAT (Sea-Mango) Oct 31, 2024

    WARNING: This is not a mango. Do not eat this non-mango, this Lord of Lies, this Great Deceiver, for it is the sea-mango (Cerbera manghas) and it absolutely will kill you. The story is a little more complicated, however, as this tree provides an undeniably invaluable resource... but is it worth the risk?

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Stung By Thirty Wasps (Giant Stinging Tree) Oct 24, 2024

    In this episode, we explore Australia’s infamous giant stinging tree (Dendrocnide moroides) and its neurotoxic hairs that cause agonizing pain. How fun(?)!

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Parenchyma Schmarenchyma (Boojum Tree) Oct 17, 2024

    Join us as we get weird with the Boojum tree (Fouquieria columnaris), a quirky desert oddball with some fascinating parenchyma. Plus, Casey reads an interminably long Lewis Carroll poem that gave this tree its name.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    The 𝘹 Files (Munz Oak) Oct 10, 2024

    Join us on a mysterious journey through time to discuss the Munz oak (Quercus x munzii), a curious hybrid of UNKNOWN ORIGIN!

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Sitting Under a (Western Sycamore) Oct 03, 2024

    Join us for an afternoon chat under this gorgeous Western sycamore (Platanus racemosa) and hear about what Casey and Alex and reflecting on lately.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Dam! (China-Fir) Sep 26, 2024

    Dam! Let’s talk about them, and about the China-fir (Cunninghamia lanceolata) and the ingenious agroforestry methods of the Kam people of China.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    SEEDPOD: Alie Ward from OLOGIES Sep 19, 2024

    The Fabulous, Funny, Smart, and Warm woman we all love, ALIE WARD graces the podcast today. We can hardly believe it. Alie was a very important part of the early success of Completely Arbortrary and we forever admire her! Among many other job titles, Alie is the host and creator of Ologies! Please enjoy.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Yellow Die (American Smoketree) Sep 12, 2024

    “I’d rather see a smoketree than a tree smoking.” Enter the American smoketree (Cotinus obovatus), a beautiful little tree that was nearly used to extinction.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Weirder Sex (Striped Maple) Sep 05, 2024

    Welcome to the Alternative Sex Experience, featuring the striped maple (Acer pensylvanicum). In our continued discussion on dioecy, this one takes a curiously sexual turn.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    A Tale of Two Houses (English Holly) Aug 29, 2024

    It’s beginning to look a lot like… an invasive pokey nightmare, with the English holly (Ilex aquafolium). Learn all about dioeciousness, and what makes this hot new sexual fad so successful!

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Let Your Neighbors See You Naked! (Leyland Cypress) Aug 22, 2024

    Just another arborvitae, the Leyland cypress (Cupressus × leylandii et al) has to be one of the most deplorable species we’ve investigated on Completely Arbortrary. Learn all about this tree’s poorest qualities, then join us for a segment of Slang Game!

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Smokey Bad (Western White Pine) Aug 15, 2024

    The Great Fire of 1910 greatly changed the (literal) landscape of northern Idaho, as well as the continent’s population of western white pine (Pinus monitcola). What followed was one of the most successful and dangerous marketing campaigns in US history.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Xiāngfěi (Chinese-Nutmeg) Aug 08, 2024

    A fascinating tree with no shortage of fun facts, the Chinese-nutmeg (Torreya grandis) is a cornerstone of Chinese history and traditional medicine. And man, is it yummy (we think)!

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Sweet Pea (Tamarind) Aug 01, 2024

    We continue our plant-based diet with a giant of the culinary world, the tamarind (Tamarindus indica). Whether in chamoy or pad thai, this sweet pea is the darling of many a regional cuisine, worldwide!

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Banana Sundae (Ice-Cream Bean) Jul 25, 2024

    You think ice cream grows on trees?! The ice-cream bean (Inga edulis) is one of nature’s greatest gifts to humanity. This agroforestry behemoth is South America’s fruity answer to sweet-toothed nature enthusiasts. And what is a fruit, anyway?

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Chewing Gum (Sapodilla) Jul 18, 2024

    This is Plant-Based Diet: Part Chew, a new series from Completely Arbortrary all about trees that give us food! In this episode, we discuss the sapodilla (Manilkara zapota) a tree that gives us not one, but TWO delicious treats: fruit and gum.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Ants and Fungiculture (Almécega) Jul 11, 2024

    Did ants invent agriculture? Kind of, yes! Learn how in this itchy episode on South America’s own almécega (Protium heptaphyllum).

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    What is Photosynthesis? Jul 04, 2024

    Hardship strikes the house of Arbortrary, so please enjoy this bonus episode all about our favorite process in nature, photosynthesis!

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Weird Sex (Black Tree Fern) Jun 27, 2024

    No, it's not a Tree. But, it is a tree. The black tree fern has some incredible qualities, not least of which is the way it creates more ferns. Get ready to hear about some FREAKY stuff.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    The City That Trees Built (European Alder) Jun 20, 2024

    About 1600 years ago, a group of refugees settled on a mucky swath of land that would one day be known as Venice. What followed is one of the greatest marvels of human engineering: a city built entirely on trees in water. Enter European alder (Alnus glutinosa), an ordinary tree with an extraordinary role in history.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    The Book of Casey Jun 13, 2024

    In this bonus episode, hear all about how Casey became Casey. His schooling, career trajectory, and the fated beginning of Completely Arbortrary.

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Superiority Complex (White Fir) Jun 06, 2024

    Sorry, it’s a fir thing. The white fir (Abies concolor) is no simple tree. It’s a part of broader complex of trees. What does this mean for in the context of its taxonomy? Well… it’s complex.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Age of Deceit (Alerce) May 30, 2024

    A tower of clouds in the forests of Chile, and the center of a dendrochronological scandal, the Alerce (Fitzroya cupressoides) is a monolithic beauty and officially the giant sequoia of the south.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    When Good Trees Go Bad (Laurel Oak) May 23, 2024

    What happens when good trees go bad? You get the laurel oak (Quercus laurifolia), a suitable template oak with a bad habit. Living in the wild, this tree does its thing as well as it can, but this Midnight Cowboy wasn't cut out for the big city.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    BONUS EPISODE: What is a Leaf? May 16, 2024

    After living a life of stem for the last 7 weeks, we need a break! So this week, you get a bonus episode: what is a leaf? In this episode from 2021 we discuss what a leaf is, how they grow, and some defining characteristics. To coincide with this bonus episode, we are expanding our CONE CLUB to include our very first--you guessed it--LEAF! The Bur Oak leaf illustrated by Caylin Jayde. We hope you love it, and if you want to receive this illustration as a sticker next month and support the show, join the Cone Club over at arbortrarypod.supercast.com. See you next week!


    This week's episode is sponsored by NordVPN - get started at nordvpn.com/TREES

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    7 Deadly Stems: ENVY (Giant Bamboo) May 09, 2024

    A grass so interesting it earned a spot on Completely Arbortrary, giant dragon bamboo (Dendrocalamus sinicus) is a stunningly large species with no shortage of interesting quirks. But… is it a tree, or does it look on enviously. Listen now to the exciting conclusion of Seven Deadly Stems! Then, listen for a segment of Trail Snacks, where we eat something we’ve wanted to try for years.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    7 Deadly Stems: PRIDE (Ohio Buckeye) May 02, 2024

    Pride, the downfall of many an ancient Greek hero, is the subject of today’s Deadly Stem. As is the Ohio Buckeye (Aesculus glabra). How did this underwhelming tree become a regional icon?

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    7 Deadly Stems: GREED (Russian-Olive) Apr 25, 2024

    An oft-reviled tree, the Russian-olive (Elaeagnus angustifolia) is the quintissential greedy little bastard. Its invasiveness is infamous, and the disappointments it presents are seemingly endless. Then we answer a listener question about “Stumpy”!

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    7 Deadly Stems: WRATH (Bullhorn Acacia) Apr 18, 2024

    Are you sensitive? Do you show aggression when you're afraid or perceiving some sort of attack? Do you have a mercenary army of ants at your disposal to dispact at the first sign of aggression against you? Then you might just be a bullhorn acacia (Vachellia cornigera).

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    7 Deadly Stems: GLUTTONY (Common Fig) Apr 11, 2024

    The common fig (Ficus carica): one of humanity’s first food obsessions. From covering Adam’s junk to covering other Eve’s junk, this plant has no shortage of cultural import. But does it deserve the valor it’s flaunted for hundreds of years?

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals


    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    7 Deadly Stems: SLOTH (Weeping Willow) Apr 04, 2024

    *Yawn*. The weeping willow (Salix babylonica) is one of the most recognized trees in the world, but boy is it lazy! Learn about the questionable roots (ha) of this tree and what makes it such a beautiful mess. Then we answer a question from 12-year-old Gus!

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    SEEDPOD with David Allen Sibley Apr 01, 2024

    We are honored to be joined by author, illustrator, and overall bird-and-tree-advocate DAVID ALLEN SIBLEY! We talk to David about his process, whether he's an artist first or a bird lover first, and have him describe a bird perpetrator to us as we sketch from his description!

    To hear and see the full discussion later this week, become a Treemium Member at arbortrarypod.supercast.com


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    7 Deadly Stems: LUST (Coco-de-Mer) Mar 28, 2024

    The Coco-de-mer (Lodoicea maldivica) is the most sexual tree on the planet, and we’re out to prove it. Listen to find out how this lusty tree is the perfect example of this deadly stem in this, our first episode of 7 Deadly Stems.

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    There's No Gum Like (Snow Gum) Mar 21, 2024

    Do you inherit strong muscles, deft fingers, or musical talent? Jean-Baptiste Lamarck sure thought so… and groundbreaking research suggests he may have been right! One of the central characters of this study is this week’s tree, the snow gum (Eucalyptus pauciflora)

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Feeling Rusty (Western Serviceberry) Mar 14, 2024

    Feeling rusty? The western serviceberry sure is (Amelanchier alnifolia). In this episode, we discuss the russ(t) and how it affects our arboreal friends.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Kissing Cousins (Rocky Mountain Pine) Mar 07, 2024

    The pondero—we mean, the Rocky Mountain Pine (Pinus scopulorum) asks us the ultimate version of the question: are you a lumper or a splitter?


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    TREEMIUM EPISODE: Renaming Nature Feb 29, 2024

    There is a shakeup in the bird world: ornithologists are renaming every bird whose common name is based on a human! So why can't we do this for trees? We can, and do, in this bonus episode unlocked from our support platform Completely Arbortrary Treemium! Become a Treemium member today and unlock a treasure trove of cool rewards at arbortrarypod.supercast.com


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    S.A.D. (Witch-Hazel) Feb 22, 2024

    Everyone gets S.A.D. from time to time, so it's a good thing we have the witch-hazel (Hamamelis x intermedia), a tree (or shrub) that flowers in the darkest, dreariest months of the year. It's going to be okay.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website

    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Welcome to the Jungle (Brazil Nut) Feb 15, 2024

    Welcome to Completely Arbortrary, you’re gonna LEARRRRN all about the Brazil nut (Bertholletia excelsa). On this episode as diverse in “fun facts” as the jungle is in species, we talk all about the Brazil nut (seed). Stay tuned for talk all about this fascinating species and the work going into preserving it and its home. Featuring Rhett and Danielle from Wild Green Streams for Ecological Fiends.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

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    Cover art by Jillian Barthold

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    Native-Invasive (Western Juniper) Feb 08, 2024

    Oh this juniper is ever so western (Juniperus occidentalis). When it comes to ecological turmoil, when is it okay to blame a tree, and when should we blame ourselves? That’s the question we ask ourselves today with this “Greedy” tree.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

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    SEEDPOD: Phyllis Reynolds, Portland Tree Legend Feb 05, 2024

    Meet Phyllis Reynolds: original Portland Heritage Tree committee member, author of Trees of Greater Portland, and overall hardcore tree advocate. We sat down with Phyllis in the living room of her beautiful NW Portland home on the outskirts of Hoyt Arboretum, where she is a local legend and her name is spoken with mirthful reverence.

    To hear the full interview and see the full uncut video, support Completely Arbortrary Treemium at arbortrarypod.supercast.com

    To get a copy of Phyllis's book, check your local independent bookstore.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

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    Seedpod theme song by The Mini-Vandals

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    What is Arboriculture? (European Horsechestnut) Feb 01, 2024

    Fancy a game of conkers? No? Well how about a conversation about the ins and outs of arboriculture, and how it relates to the European horsechestnut (Aesculus hippocastanum)? Hear Casey’s first-hand experience regarding how to become an arborist, and what an arborist actually is!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

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    Parasite (This Week's Tree) Jan 25, 2024

    A tree with no (officiall common) name, the Falcatifolium taxoides is a derivative tree from the island of New Caledonia. It’s yew-ish, it’s sickle-like, and it’s a PODOCARP. Plus, it has a curious leech of a friend who depends on it for everything—the world’s only parasitic gymnosperm.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

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    The Birds & The Trees (Rimu) Jan 18, 2024

    It’s time for that special talk… about the rimu (Dacrydium cupressinum) and its special friend and lover the Kākāpō. This bird bases its entire existence around this tree, and the feelings just may be mutual.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

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    Podocarps (Totara) Jan 11, 2024

    PODOCARPS! Never have we ever discussed one of its ilk, much to the chagrin of thousands, we’re sure. And to start our mini-series of New Zealand trees, today we present the Totara (Podocarpus totara). With its curious leaf-like-needle-like-leaves, this conifer is so good at pretending to be a broadleaf tree, it’s practically become one.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

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    Butterfly Talk! (Oyamel) Jan 04, 2024

    Have you ever seen a column of gold (orange)? It may just be an oyamel (Abies religiosa), the sacred fir. Every year countless Monarch butterflies pilgrimage to the mountains of Mexico to spend their winter months clinging to these trees, but why? (Spoiler: we don't know.)

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    Princess Mononoke (Hinoki) Dec 28, 2023

    Can we interest you in a forest bath? On the series finale of Treeyazaki, we discuss Princess Mononoke and the hinoki cypress (Chamaecyparis obtusa). A tree ripe with VOCs (volatile organic compounds) and rich tradition such as forest bathing, this tree is a quintisential Japanese conifer.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

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    Cover art by Jillian Barthold

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    Nausicaä of the Valley of the Wind (Japanese Fir) Dec 21, 2023

    What does a nuclear disaster do to trees? Find out on this episode of Treeyazaki, where we discuss the Miyazaki film Nausicaa of the Valley of the Wind and the Japanese fir. Toxic jungles, giant bugs, and feudal politics. This movie was made for us.

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    My Neighbor Totoro (Camphor) Dec 14, 2023

    Who is Totoro? They’re a spirit, a kami, of a massive camphor tree. In this episode of Treeyazaki, we talk legendary animated film My Neighbor Totoro and one of its central characters, the camphor (Cinnamomum camphora). We also talk about animism and its role in every culture around the entire world.


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    Spirited Away (Sakaki) Dec 07, 2023

    Welcome to Completely Arbortrary’s Treeyazaki, a month-long exploration of the trees of Studio Ghibli and films of Hayao Miyazaki! To start our journey, we visit a bathhouse for spirits in Spirited Away. This is a story about a young girl who finds herself trapped in the spirit world, and must escape with the help of a river spirit. This episode we’re talking Shinto, the indigenous religion of Japan, and the importance of the Sakaki (Cleyera japonica).

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson

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    Cover art by Jillian Barthold

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    The Future of Completely Arbortrary Dec 04, 2023

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    BONUS EPISODE - Treeyazaki Trailer, Big Announcement, & Appendices Nov 30, 2023

    In this BONUS EPISODE of Completely Arbortrary, hear the first trailer for our new December theme month: TREEYAZAKI, a month-long exploration of the trees of Studio Ghibli and the films of Hayao Miyazaki. Also, stick around for a big announcement about the way you support Completely Arbortrary. Then, listen to some cutting room floor audio from three mainline episodes!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Preservation (Incense-Cedar) Nov 23, 2023

    PRESERVATION! Join us for a conversation on preservation, John Muir, and the incense-cedar (Calocedrus decurrens).


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Conservation (Oregon Myrtle) Nov 16, 2023

    CONSERVATION! What is it? And how does it differ from preservation? Have you been using them interchangeably too? Well, no longer! In this episode, we discuss the Oregon myrtle (Umbellularia californica), and its relationship to conservation, and conservation’s relationship to the first Gifford Pinchot.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Invasion of the Gaudy Statures (Norway Maple) Nov 09, 2023

    With great distaste we present to you the Norway maple (Acer platanoides). This suburbanite tree of many faces is very popular, which might be the best thing we can say about it. But we have many good things to say about diversity. In every facet of life, diversity makes us stronger… and trees are no different! Let’s also define invasiveness and hear Casey’s extremely hot take.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Poppin' Bottles (Cork Oak) Nov 02, 2023

    We’re poppin’ bottles on this very corky episode of Completely Arbortrary. Learn all about the cork oak (Quercus suber) and the dehesas of Spain and Portugal. These agrosilvopastoral lands are a marvel of sustainability and industry, and a beautiful template for letting nature lead the way. Also, stick around for some exciting BOOK NEWS from Casey!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Fun Facts (Ghost Pine) Oct 26, 2023

    “A great tree, that is kind of grey!” The ghost pine (Pinus sabiniana) is one of earth’s most spookiest trees, and chock full of curiosities in almost every category of its being. FUN FACTS!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    The Stick Sense (Honey Locust) Oct 19, 2023

    It lurks in the dark, and it sees the darkness…. The honey locust (Gleditsia triacanthos), like most trees, has a stick sense. How does it perceive the world? It all starts in the dark.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Laurisilva (Canary Island Laurel) Oct 12, 2023

    A million year old forest, the Laurisilva of Madeira are stunning ecosystems trapped in time and untouched by humanity. At the center of this forest is the Canary Island Laurel (Prunus lusitanica).


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    BONUS EPISODE - Anthropomorphism Oct 05, 2023

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Disney & Land (Canary Island Date Palm) Sep 28, 2023

    What was the “happiest place on Earth” before it was Disneyland? And what is it before that? We go back in time today to explore the dark history of the changes of this land from indigenous river people to farmland to massive theme park, and the one tree that survived it all, the Canary Island date palm (Phoenix canariensis).


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    SWEET NEEM! (Curry Leaf Tree) Sep 21, 2023

    Sweet Neem! That’s right, today we’re talking all things Curry Leaf Tree (Murraya koenigii), and all things curry! This Indian tree is one of the most important trees in India, and one of the most delicious. You may even learn a little something about “curry”. Then, we answer a question about kelp!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Call Me By Your Neem (Margosa) Sep 14, 2023

    The Margosa (Azadirachta indica) is one of the world’s most magical trees. Why? It’s in the oil! We call it neem oil, and its benefits have been lauded for centuries, for humans and plants alike. And join us for a discussion on Ayurveda, a traditional medicine system from India.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Extinct in the Wild (Franklinia) Sep 07, 2023

    What does it mean to be “extinct in the wild”? Just ask the Franklinia (Franklinia alatamaha), who lives it existence only in arboretums and gardens. But it wasn’t always like this…. Then, we answer a question about TREE LAW.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Michael Rizo (Sourwood) Aug 31, 2023

    A curious and very special relationship exists between the Sourwood (and its family) and the fungus that feeds it. Find out all about this ancient pact, and hear us wretch and spit our way through a very sour segment of Trail Snacks.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Ms. Bee Haven (Silver Linden) Aug 24, 2023

    Bees go to trees and get pollen on their knees. That tree is very likely a Silver linden (Tilia tomentosa). On this episode, we talk about bees. Unlike the last episode in which we talked about bees, this one has a happy ending. Plus, learn about Honeydew honey (just don’t think about it too much before you eat it). To hear Casey’s “Save The Bees” rant, join the Patreon!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    The Loneliest Tree (Sahara Cypress) Aug 17, 2023

    One of the world’s loneliest and most critically endangered trees, the Sahara cypress (Cupressus dupreziana) stands nearly alone in the dead center of the mindblowingly vast Sahara desert in northern Africa. With only a handful of these trees left, we ask the question… what in the world is going on with these curious reproducers.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Cool Dudes, Hot Chicks (Beach Sheoak) Aug 10, 2023

    When does a tree that seems to be able to provide so much good become a tree that is reviled for causing so much harm? Today’s subject is the beach sheoak (Casuarina equisetifolia) a tree that is loved and loathed by many, including the Loggerhead turtles (Caretta caretta) of Keewaydin Island, where some well-meaning locals caused harm to the local sea turtle population in an effort to stay the gulf winds.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    BONUS EPISODE - Anthropomorphism Aug 03, 2023

    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Jaya Sri Maha Bodhi (Sacred Fig) Jul 27, 2023

    The tree under which The Buddha sat and reached enlightenment, the sacred fig (Ficus religiosa) is one of the world’s most iconic trees. As an ending to our Summer Vacation series, we trip to Sri Lanka where we visit the Jaya Sri Maha Bodhi. Hear our uneducated takes on Buddhism, and a reminder about what dark waspy rituals go on inside your favorite figs. See you next Fall!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Avenue of the Baobabs (Baobab) Jul 20, 2023

    The Baobab! One of Africa’s most storied and mythological trees, the baobab (Adansonia grandidieri) is one tall, thicc mother. Learn about how this tree is the camel of the arboreal world, listen to the myths associated with its topsy-turvy appearance, and learn about one of the best places to view them, Madagascar’s Avenue of the Baobabs.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Cotton Tree of Freetown (Kapok) Jul 13, 2023

    This week we head to Sierra Leone and take a look at their famous kapok, the Cotton Tree of Freetown (Ceiba pentandra). The kapok is a tree that has had uses for humans for thousands of years, but the Cotton Tree of Freetown was far more than just a useful tree representing the spirit of a nation.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Árbol Del Tule (Montezuma Cypress) Jul 06, 2023

    We’re going on a Summer Vacation! First stop, Oaxaca, Mexico, to visit the sacred and legendary Árbol del Tule (Montezuma cypress, Taxodium mucronatum). This glorious and massive tree sits squarely in a church courtyard, and has found its way into the zeitgeist of Oaxacan culture. With a sordid taxonomic past, this tree tells a tall tale. But is it really a tree at all…?


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Perpetual Popularity (Colorado Blue Spruce) Jun 29, 2023

    What makes a tree popular? What keeps a tree popular? Ask the Colorado blue spruce (Picea pungens), whose commercial popularity has lasted decades with no sign of slowing down. The “Norm” to plant nurseries’ Cheers, this spruce is a common character from corporate courtyards to suburban yards. Plus, we ask the question: will this tree’s popularity ever end?


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Desert Darling (Blue Palo Verde) Jun 22, 2023

    Our desert darling, the Blue Palo Verde (Parkinsonia florida) might just be one of the most desert-adapted trees in the west. Named after a funny pharmacist, this desert dweller is a team player as much as it is a lone wolf.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    The Other Wood Talk (Alaska Yellow-Cedar) Jun 12, 2023

    A tree of many names, the Alaska yellow-cedar (Cupressus nootkatensis) is a quintessential conifer with a plethora of identities. And in this episode, we discuss the wood of conifers, and how it differs from the wood of its harder, more broad-leafed counterpart.


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    If You Like Paniculatas (Golden Raintree) Jun 08, 2023

    If you like paniculatas, and getting caught in the golden rain, you’ll love this episode all about the golden rain tree (Koelreuteria paniculata). An instant house favorite, this Chinese lantern tree marks Buddhist tombs, grows big but small, and makes for a fabulous alleé. The slogan of this episode? Right Tree, Right Place.


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    Wood Talk (Northern Red Oak) Jun 01, 2023

    In this woody episode of Completely Arbortrary, we discuss the jewel of the east, the Northern red oak (Quercus rubra). Wood facts, wood terminology, bad wood jokes—this is the episode that wood built!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Great Malus (Apple 2) May 25, 2023

    In our final installment of Completely Arbortrary’s Excellent Adventure, we take it all the way back to the year 0, Kazakhstan, where we discuss the wolf to our apple’s dog, the Wolf apple (Malus sieversii). Today, we know apple as a supermarket produce section monopolizers, but these are simply the domesticated version of the wild animal that is sieversii, a Kazakhstani native from a different time.


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    Northern White-Cedar (Arborvitae 2) May 18, 2023

    A curse word ‘round these parts, the Arborvitae (Thuja occidentalis) is not a species in itself, but a cultivar of the great Northern white-cedar, a majestic and hearty tree of the North of America. This beauty can be found growing on the roughest terrain of the Niagara escarpment, so why do we plant it as a middling hedge and street tree in other parts of the country? Then, we undergo a massive rebrand of this stolen valor Tree of Life.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    水杉 (Dawn Redwood 2) May 11, 2023

    The dawn redwood (Metasequoia glyptostroboides) was once the water fir, a tree endemic to a small valley in China. But thanks to the likes of Chinese foresters, a Japanese paleobotanist, and American plant explorers, this tree is now a worldwide sensation. Join us as we journey to China, 3,000,000 BC and 1940s Japan to witness the birth of a forest giant.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Episode II: Attack of the Cones (Douglas-fir 2) May 04, 2023

    It’s Completely Arbortrary’s Excellent Adventure! To begin this journey through tree-time and tree-space, we revisit the crown of the Pacific Northwest and the very first tree we covered on this podcast, the Douglas-fir (Pseudotsuga menziesii). A long-lived tree with indigenous significance, modern lumber hypersignificance, and a huge native range, the Douglas-fir has few downsides. Learn new facts about this arboreal everyman and its family on this bodacious episode of Completely Arbortrary’s Excellent Adventure!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    BONUS EPISODE - How Do Trees Die? Apr 27, 2023

    CW: Death


    Straight from the Patreon (patreon.com/arbortrarypod) we give you this HUGE two-parter-turned-one-parter episode on how trees die. What does it mean to "die"? And how is human death different than tree death? Hear all about the process and the philosophy behind tree death in this unlocked bonus episode! We'll be back next with an excellent new series of Completely Arbortrary.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Botreemian Sapsody (Kentucky Coffeetree) Apr 20, 2023

    Oh, Kentucky coffeetree (Gymnocladus dioicus), how we love you (please love us back). A tree living out of its time that makes every effort to thwart attention and interaction, the Kentucky coffeetree may be the most curmudgeonly tree ever discussed on Completely Arbortrary. Learn about indigenous dice games, ecological anachronism, poisonous parts and scarification—this truly is a tree that hurts to know and must be hurt to grow.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Burnt Wood Plank (Sugi) Apr 13, 2023

    To conclude our miniseries on logging, we discuss sugi (Crytomeria japonica), a unique conifer that hails from the forests of Japan. In a nation spared by colonization, where tradition and modernity coexist, sugi and its growing and processing methods are emblematic of this non-dichotomous dynamic. Yakisugi (or burnt cedar) is a method of treating sugi wood by means of fire, creating a phoenix-like rise from the ashes, making the wood more impermeable, and more resistant to insects and decay. Then, we play Family Tree: Mario Edition!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Arboreal Corn (Monterey Pine) Apr 06, 2023

    What do you get when you treat trees like corn? A plantation, of course. And a whole lot of Monterey pine (Pinus radiata). A tree that grows stubby and wonky in its native range, the Monterey pine grows like a poster child for logging in New Zealand, where its stick-straight form makes it the tree of choice for an unthinkably large swath of logging land. But oh, that cone...


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    Under The Tree (Jarrah) Mar 30, 2023

    Welcome to Australia, land of strange plants. Jarrah (Eucalyptus marginata) is no exception! This superfluously hardwooded tree of the Darling Range of western Australia is home to many a marsupial, and sports an astronomically deep root system. But when it caught the attention of voracious European loggers for its striking wood, Jarrah's future turned irreversibly grim.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Wet Hot American Lumber (Eastern White Pine) Mar 23, 2023

    Logging has seen a stark evolution since its origins. What started as a wildly dangerous and often deadly process done largely by hand is now a multibillion dollar industry facilitated by manmade machines. Herein we meet our character, the eastern white pine (Pinus strobus), a ghost from the early days of American logging. In the first of a short series on logging, we hear the tragic tale of this quintessential pine species and the lumber barons who ensured its demise.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Queen of the Canoe Crops (Noni) Mar 16, 2023

    1000 years ago, Polynesians reached the islands of Hawaii. On their seaworthy canoes were only a handful of plant species, but among them was the divisively flavorful botanical wonderdrug known as noni (Morinda citrifolia). Known for its funky flavors and breadth of influence on traditional Hawaiian medicine, this pan-tropical tree knows how to grow just about anywhere a canoe can bring it. Learn all about noni and the much broader classification of 'fruit', this week on Completely Arbortrary.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    The Tree's Knees (Bald Cypress) Mar 09, 2023

    The devil went down to Georgia, where the Bald cypress (Taxodium distichum) lives its days in peace and harmony. This record-breakingly long-lived tree found the perfect place to call home--the swamps of the Southeastern United States. There, it sheds stereotypes as well as it sheds its needles, growing with grace and beauty against the harsh and dreary landscapes in which it resides. This deciduous conifer is without a doubt and from top to bottom a unique species. Then, we play a new game all about puns: A Little Bit Puntree, A Little Bit Log and Soil.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    BONUS EPISODE - Non-Tree Food-Tree Food Mar 02, 2023

    In this BONUS EPISODE from our Patreon (c. Treeson's Eatings 2022), we discuss three non-tree food plants we love eat during the holidays: vanilla, cranberries, and peppermint! While we take a breath after our SUCCESSION series, please enjoy this unlocked episode and learn a thing or two about some classic holiday foods.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Late SUCCESSION (Yellow Carabeen) Feb 23, 2023

    Late succession... the third and final act of a seemingly eternal stage play, and a self-perpetuating phase of the lifespan of a forest. The Yellow carabeen (Sloanea woollsii) dominates late succession in Australia. How and why is it so successful, and how does it set up generational success for its kind? In the final episode of our SUCCESSION series, we take a long look at the late stages of a forest, and discuss why it has the potential to go on forever. But nothing lasts.... Then, we put together our Board of Firectors at Crowson, Clapp, and Sons.


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    Cover art by Jillian Barthold

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    Mid SUCCESSION (Red Alder) Feb 16, 2023

    Weed tree? Or... the unsung hero of mid succession forests? The red alder (Alnus rubra) is our official representative from mid succession forests, and the lens through which we view this second phase, the early adulthood, of forest growth. There are no shortage of benefits this tree provides to its habitat, so does it deserve its bad reputation? On our way to late succession, we find shade intolerant plants dying away, making room for our first "real" trees. But the saplings of today are the successors of tomorrow...


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Early SUCCESSION (Staghorn Sumac) Feb 09, 2023

    When a forest goes through a massive disturbance, little survives. We begin our journey here. What happens in the first stage of the succession of a forest? Learn in this episode through the eyes of the staghorn sumac (Rhus typhina), an en'tree'preneur of the early succession. MAKE YOUR MOVE.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Never Tell Me The Odds (Koa) Feb 02, 2023

    Thick, thorough, and quite enjoyable, today's episode is all about the koa (Acacia koa) and its endemism on the 5 million year-old islands of Hawai'i. This special tree is unique in so many ways, we lost count: fake leaves, exploding bark, instrument wood... this tree's got it all. We also chat about Hawai'i, and the incredible odds of life landing, rooting, and thriving on these islands. After our discussion, we revisit some "night tree" quesitons from Alex's appearance on the songwriting podcast Honest Jams.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Two Fir One (Subalpine Fir & Noble Fir) Jan 26, 2023

    EPISODE 100! We truly made it. And to celebrate, we're joined not only by the obligatory Kool & The Gang, but by TWO true firs, the Subalpine fir (Abies lasiocarpa) and the Noble fir (Abies procera). It's a two fir one! Then we take a trip down memory allée and visit our very first episode. Happy Episode 100 everyone!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Sir Joseph Banks (Bull Banksia) Jan 19, 2023

    A big flower with a big name. This week we discuss the bull banksia (Banksia grandis) and the prolific capitalist-botanist it’s named after, Sir Joseph Banks of the Royal Society.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Conifer Wonderland (Brewer Spruce) Jan 12, 2023

    What does it mean to be endemic? This. Tree. KNOWS. As does its homeland, the Klamath Mountains, a hotbed of endemic species. We chat with author and coniferman Michael Kauffmann about the Brewer spruce (Picea breweriana) and its unique place in this world.


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    Everytree Everywhere All At Once (Red Maple) Jan 05, 2023

    Happy New Year Fungal Associates! We bring you a simultaneously revered and reviled tree: the red maple (Acer rubrum). Learn how this megasuperstar got its start, and how it rose to be the Starbucks, Red Lobster, and the Chris Pratt of the tree world. Happy 2023!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Once And Future Quing (Quince) Dec 29, 2022

    THE QUINCE (Cydonia oblonga), a legendary fruit of myth and magic, lost to time and erased from history by its usurper, the evil apple. This golden-apple has a rich history and an ever better taste. Please enjoy our LAST episode of Treeson’s Eatings, and of 2022!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Triangle of Citrus (Mandarin Orange) Dec 22, 2022

    We revisit the Triangle of Citrus to discuss a cornerstone of the shape, the Mandarin orange (Citrus reticulata). We talk etymology, genetic diversity and interbreeding before a visit from a pair of happy carolers. Merry Christmas!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Big Nuts (Pecan) Dec 15, 2022

    This week we take a trip down the Mississippi River and dive into the world of the pecan (Carya illinoinensis). Our second installment of Treeson's Eatings, we chat about where this nut came from, how it got to where it is today, and just how lovely it truly is.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Monopoly: Portuguese Edition (Cinnamon) Dec 08, 2022

    This week we take another dive into history and question if the true cinnamon (Cinnamomum verum) really stands up to its name. This is our first installment of Treeson's Eatings, so get your spoons ready and listen in!


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    BONUS EPISODE - Fungal Associated Press: Tree Truths & A Lie Dec 01, 2022

    Enjoy this bonus episode as we take a quick break. We put out these episodes twice a month and they are available in our Patreon. So go check it out and hear more fabulous conversations about other related topics and trees.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Acorn-Eaters (White Oak) Nov 24, 2022

    This week we bring you the Tom Hanks of the trees, the white oak (Quercus alba). We take a deep dive in how this ubiquitous tree has been a cultural icon since before the "first Thanksgiving" and see how it has maintained a reverence unlike almost all others.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Green Pegs And CAM (Saguaro Cactus) Nov 17, 2022

    This week, we really jump off the deep end and we throw off the yoke of traditional treedom. This week we're coving the saguaro cactus (Carnegiea gigantea), a giant of its universe. Listen in for a look at what it takes to be a cactus, and stay for a new word game.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    The Tree Before Time 2 (Wollemi Pine) Nov 10, 2022

    Wollemia nobilis, the conifer we didn't know existed. This week we discuss the Wollemi-pine, a tree before time, and its geological journey across the world. We also hear from Ian Allen from the Sydney Botanic Gardens on this tree and its questionable future. Watch your step!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Rock Me, Mama (Longleaf Pine) Nov 03, 2022

    Headed down south to the land of the pine, our journey this week takes us to the flats of North Caroline. The longleaf pine (Pinus palustris) has a storied history that means a whole lot to a whole lot of people, and has for generations. Listen in for a walk through the southern forests and learn what makes this tree so unique.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Trunkenstein's Monster (Rainbow Wood) Oct 27, 2022

    HAPPY HALLOWEEN! This week's tree is another elder that grew up in a different time, the rainbow wood (Araucarioxylon arizonicum). A fossil of a tree, we dig into what petrification actually is, and then we build ourselves a Trunkenstein's monster. Very spooky.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

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    Shrikopath (Thorn Mimosa) Oct 20, 2022

    Last week we talked about a tree that has a unique--and deadly--relationship with birds. This week, the script is flipped and we hear about a bird that uses a tree to accomplish it gruesome agenda: the thorn mimosa (Vachellia nilotica).


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Birdcatcher (Pisonia) Oct 13, 2022

    What happens when a temporary tattoo becomes permanent, and makes you permanently DEAD?! We find out in our most macabre episode yet coving the bird-catcher tree (Pisonia grandis). Join us this week as discuss this tree's unique means of spreading its seeds, and the dark repercussions.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Liquid Amber Flows From It (Sweetgum) Oct 06, 2022

    This week we present to you a case for and against the sweetgum (Liquidambar styraciflua). A tree that is lauded by some and loathed by others, we take sides and present the merits and demerits of the subject tree and leave it for you to decide its fate. Which side will you choose?


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    BONUS EPISODE - Patreon Revamp & What is Phenology? Sep 29, 2022

    Due to a host of circumstances, our regularly scheduled programming has been postponed to next week! HOWEVER, we're taking this opportunity to tell you all about our Patreon revamp! And to share a Patreon episode - What is Phenology! We hope you enjoy it and we'll see you next week with the Sweetgum!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    The BLM (Bigleaf Maple) Sep 22, 2022

    Close your eyes and imagine a maple leaf. What is it that defines the quintessential maple leaf? Well today, we chat about the bigleaf maple (Acer macrophyllum) and dive into how that standard image of a maple leaf is as accurate as you may think. Then we chat about the biggest news of the day with another edition of the Fungal Associated Press.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    AKA (Serviceberry) Sep 15, 2022

    A tree that has made no enemies, a tree that doesn't rock the boat, today's tree is the Canadian serviceberry, also knowns as the shad-blow, the shadbush, the bilberry, the juneberry (Amelanchier canadensis). This episode we have a classic fireside chat about this tree that has something for everyone, and on top of that we collaborated with Amanda Spinosa on a delicious recipe to show off the fruit of this wacky little tree.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    BONUS EPISODE - Tree Trek: Spring Day Sep 08, 2022

    Alex and Casey go on a walkabout in the Overlook neighborhood of Portland to gander at some of the city's most gorgeous arboreal specimens.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Big Time Aroma (Indian Sandalwood) Sep 01, 2022

    Today's story has us wondering who's the real victim. The Indian sandalwood (Santalum album) is a tree that has been used for millennia for cultural practices across the world, but it's also a tree that has its fair share of using other organisms for its own purposes.


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    Keystone Species (Whitebark Pine) Aug 25, 2022

    The grand finale in our symbiosis 4 Act play. In this special episode of Completely Arbortrary, we discuss the much beloved Whitebark pine (Pinus albicaulis). We’re joined by Peri Sasnett from the Glacier National Park Headwaters podcast to discuss where these trees are and where they’re headed.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Ant Talk (Trumpet Tree) Aug 18, 2022

    In our penultimate episode about the topic, we explore symbiosis across kingdoms, and dive into the relationship between the trumpet tree (Cercopia obtusifolia) and its evolutionary partners, Azteca ants. Then we reveal a new game!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Koyamaki (Japanese Umbrella-Pine) Aug 11, 2022

    What happens when the guy who makes you pizza moves in and makes you pizza in your own kitchen--forever? Today, we get at that question and how it relates to cells in cells in cells in a tree that looks like parasols in parasols in parasols, the Japanese umbrella-pine (Sciadopitys verticillata). Buckle up.


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    Archaeondronology (Andean Alder) Aug 04, 2022

    How many characters can one introduce in one episode? Today we find out. The Andean alder (Alnus acuminata) takes us on a journey through time and space as we take on our first foray into a series dedicated to symbiosis and all its manifestations.


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    The Suburbs (Purple Leaf Plum) Jul 28, 2022

    What does the purpleleaf plum (Prunus cerasifera 'Thundercloud') represent for you? For Casey and Alex, it's the suburbs, and boy do they despise it. This week, we get a little snippet of American History and hear about how the suburbs came to be, and how this tree has come to represent them in the worst way.


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    Queuña (Andean Paper Tree) Jul 21, 2022

    There are more than 20 species of Polylepis shrubs and trees. At the highest altitudes (upwards of 16,000 feet, they grow as small shrubs. Lower, they can grow up 120 feet. So this forest is a bit unique, and we need to get to the bottom of it: IS it a forest? Or is it a shrubland? When does it become such?


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    The Cult of St. Francis (Judas Tree) Jul 14, 2022

    Should Man hold dominion over nature? And where did this idea come from? What got us in our current environmental mess in the first place. Today we talk the Judas Tree (Cercis siliquastrum) and tackle some BIG picture stuff too.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Why-Would-You-Live-There-ness (Madrone) Jul 07, 2022

    A tree that truly grows its own way, the Pacific madrone (Arbutus menziesii) is a prolific grower and a gorgeous shower. Listen along as we discuss this curious beauty and the special place it’s found in the world.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Heavy Heaven & The Infamous Air (London Planetree) Jun 30, 2022

    Can a tree help you be smarter? This week we dive into that question and discuss how air pollution effects our brains, and how trees can help keep us operating at our top level. After our rating, we head LIVE to the Grand Finale of the Tournament of Champion Trees with Tobin Mitnick (@jewslovetrees).


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    Wrongfully Scorned, Rightfully Wronged (Black Cottonwood) Jun 23, 2022

    This week we have our work cut out for us. The black cottonwood (Populus trichocarpa) is our tree of topic, and there's no getting around it: it's an emotional roller coaster that pulls us in every direction at once. Listen in and make your own opinions on this complicated tree, and stick around for the second round of the Tournament of Champion Trees, with Tobin Mitnik as our guest.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Dagger of the Desert (Joshua Tree) Jun 16, 2022

    Join us this week where the trees have no name. But this one does! It’s Joshua! Learn all about yuccas on our last of three monocotic adventures.


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    There Be Monocots (Socotra Dragon Blood Tree) Jun 09, 2022

    Our quest to further define "tree" continues with the STUNNING Socotra Dragon Blood Tree (Dracaena cinnabari). We talk all about this unique, altruistic "tree" and all the curious strategies it takes to get where it's going. Then we answer a question about tree albinoism!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    "Tree" (Chinese Windmill Palm) Jun 02, 2022

    What exactly isn't a tree? This week we cover the other side of the controversy coin with a discussion on the Chinese windmill palm (Trachycarpus fortunei). We get into the thick of it and find out just what a palm is if it's not a "tree".


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    Trees Are The Champions, My Friends (Tuliptree) May 26, 2022

    One of the biggest trees around, the tuliptree is an ancient species and a champion of the people. Learn all about the arbitrary intricacies of measuring Champion Trees and select who you think will make it to the end!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Drupe Fruit Riot (Peach) May 19, 2022

    The fruit that went ‘round the world, and the fruit that we both like the best, this week we are covering the peach tree (Prunus persica). However, we go one step further and Casey tries to convince Alex that it's not just the peach, but everything like a peach that reigns supreme in a world full of fruit!


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    Please Send Us Pawpaws! (Pawpaw) May 12, 2022

    A fruit tree that has been in all the right places with all the right stuff, the pawpaw (Asimina triloba) is a folk hero among fruits. But that's not all to the story. This week we chat about the pawpaw and it's slow, methodical march to success from the tropics to Canada.


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    Take a Twenty, Leave a Penny (Dogwood) May 05, 2022

    What is a penny worth? This is the philosophical question we grapple with today as we debate the merits of the dogwood (Cornus spp.). This episode is a little different than our normal shows because we're covering three different dogwoods all at once, but we assure you that's not where the controversy ends.


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    The Mothrix (White Mulberry) Apr 28, 2022

    A cosmopolitan tree that has humble roots, the white mulberry (Morus alba) has been transported across the world to support our insatiable appetite for silk. This week we discuss this relationship and how it's brought both the worms and the trees to every corner of the globe.


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    A Tragic Beauty (Southern Live Oak) Apr 21, 2022

    This week we chat about the famous southern live oak (Quercus virginiana) of the southeastern United States. A tree that has had many different identities, we discuss how this tree was the base of naval power during the height of colonialism and beyond, and how it's both gorgeous yet also fraught with imagery of a sordid past.


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    BONUS EPISODE - Arbortrary Shorts (feat. Lizzie Falconer & Jen Thomas from Shorts.) Apr 14, 2022

    On this BONUS EPISODE, we sit down with Lizzie Falconer and Jen Thomas from the podcast Shorts. to discuss the Ursula K. Le Guin short story Direction of the Road. Find Lizzie and Jen's podcast at shortsthepodcast.com or any your podcast platform of choice!


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    The Lord of the Tree Rings, Part Three: Specimen Tree of Gondor (Stewartia) Apr 07, 2022

    The Lord of the Tree Rings comes to a flashy finish with the Japanese stewartia (Stewartia pseudocamellia). This week we chat about all things specimen trees! Then we round off the saga with some tree lore from Alex.


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    The Lord of the Tree Rings, Part Two: Białowieża (Norway Spruce) Mar 31, 2022

    This week we march on through Middle-earth, our path leading us to the Norway spruce (Picea abies) and into the Fangorn Forest, found on Vanilla-earth as the Białowieża Forest (bee-ah-wo-vee-EDGE-ah). Join us as we ruminate about forest management and what it means to preserve a forest. Then we play a family favorite game!


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    The Lord of the Tree Rings, Part One: Concerning Tree Care (Pedunculate Oak) Mar 24, 2022

    The world is changed... In our first installment of The Lord of the Tree Rings trilogy, we discuss the pedunculate oak (Quercus robur) and take a deep dive into how we take care of trees as they enter their geriatric years, and the differences between American and European tree care. Then Alex has Casey solve a series of riddles... The Fellowship assembles.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    You Can Grow Your Own Way (Southern Catalpa) Mar 17, 2022

    Do trees even exist, man? This week we finish our second part on the "idea" of taxonomy and we dive into this question using the beautiful, rugged, southern catalpa (Catalpa bignonioides) as our guide. Come with us on this most pendantic of journeys.


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    Umwelt (Italian Cypress) Mar 10, 2022

    How do you see the world? How do you organize the world, all the plants and animals around you? This week we have a discussion about taxonomy that revolves around the gorgeous Italian cypress (Cupressus sempervirens), and it opens a door to an entirely new way to see the world.


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    It's Complicated (Paper Birch) Mar 03, 2022

    Does competition or cooperation get you further in life? That's the question we tackle this week while we discuss the paper birch (Betula papyrifera). We end this episode with a game that we all love, and get some ideas on how to love the trees in your neighborhood.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Amazing Technicolor Dreamtree (Rocky Mountain Juniper) Feb 24, 2022

    The Rocky Mountain juniper (Juniperus scopulorum), like nearly all junipers, is a conifer that took a different strategy to get its seeds dispersed. This week we chat about convergent evolution, and how nature can find the same solutions to problems in very different ways.


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    The Other Biggest Tree (Coast Redwood) Feb 17, 2022

    What can't this tree do? The coast redwood (Sequoia sempervirens) rounds off our two-part series on the oft-confused redwoods of California. This week we celebrate this tree and all that it is, then Alex finds himself in Jeopardy.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    The Biggest Tree (Giant Sequoia) Feb 10, 2022

    What does it take to be a perfect tree? We'll come to figuring it out this week as we dive into a flowing conversation about the giant sequoia (Sequoiadendron giganteum). Stick around for a discussion that explores everything about these trees, and then looks into where the term tree even comes from.


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    Shagadelic, Baby! (Shagbark Hickory) Feb 03, 2022

    The hickories (Carya) are a part of an ancient forest system that once existed across the entire northern hemisphere, from North America to Europe, across Asia to the Pacific and back again to the North America. This week, we chat about the shagbark hickory (Carya ovata) and discuss how it and it's closest relatives have been so successful, yet ended up so far from kin across the world.


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    Graveyardery (English Yew) Jan 27, 2022

    The English yew (Taxus baccata) is one of our most storied, mythological, and metaphorical trees to date. Death, disease, toxicity, warfare... it has it all! Listen along as we discuss this poisonous protector of the dead. All hail Hecate!


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    Mastodon! (Osage Orange) Jan 20, 2022

    What do you do when the way of life that you evolved over millions of years was rendered useless in the blink of an eye? Something very similar to that happened to the Osage-orange (Maclura pomifera) at the end of the Pleistocene epoch, and it wasn't alone.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Elven Beauty (European Beech) Jan 13, 2022

    Has the European beech (Fagus sylvatica) been man's best friend since time-immemorial, or has it just been doing it best to impress the whole time? This week we discuss the complex history of the European beech, but the jury is still out if it's a natural history or unnatural.


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    Trees Become Alligators (Japanese Black Pine) Jan 06, 2022

    The King of Bonsai, this week we're welcoming the new Unseason of Completely Arbortrary with a discussion of the Japanese black pine (Pinus thunbergii). This tree has been cultivated for thousands of years as bonsai trees, and this week we chat about what Casey and Alex think of these trees and the art form they helped create.


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    BONUS EPISODE - We Three Drinks (Coffee, Hops, & Grapes) Dec 30, 2021

    Enjoy this BONUS EPISODE from our Patreon as a palette cleanser to this season of food trees, in which we discuss three drinks from non-tree plants; coffee, hops, and grapes.


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    Food of the Gods (Cacao) Dec 23, 2021

    In our annual finally, we talk about the amazing cacao tree (Theobroma cacao). We discuss the sordid history of this funny little fruit, and we end the season with a deep dive into the real costs of our eating culture. As a palette cleanser, we play a new game! Then we discuss the future of Completely Arbortrary...


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    Luxuriance of Funguous Flesh (Meyer Lemon) Dec 16, 2021

    The Meyer lemon (Citrus x meyeri), named after the tiger-fighting plant explorer Frank Meyer is this week's subject, but they go way further back than that. This sour fruit tree was traded to all corners of the world and cultivated for thousands of years before, and even to this day it can be a life saver...


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    OG: Original Goop (Sassafras) Dec 09, 2021

    A tree that has been known to solve everything from rheumatism to syphilis, the sassafras tree (Sassafras albidum) is a quintessential part of the history of the United States. The classic ingredient of root beer, this tree has a lot to offer, but may not be quite as pure as they thought...


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    The Colossus (Olive) Dec 02, 2021

    The olive (Olea europaea). What more needs to be said about this historic tree? This week, we dive into how it is grown, where, and how orchards have developed and changed throughout history. The wonderful history of the olive, its groves, and its future are the topic this week.


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    To Tree or Not to Tree (Filbert) Nov 25, 2021

    The nut that actually is a nut, this week we chat about the filbert (Corylus avellana) and discuss the philosophical distinction between what exactly is a shrub versus a tree? We ask the question can we even include this in a podcast about trees? Or do we need to reconsider the very nature of that alleged category.


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    The Fruit of Life and Death (Pomegranate) Nov 18, 2021

    The pomegranate (Punica granatum), a tree of mythical history, is our subject this week. We dive to the depths of Hades back again, exploring the outsized role this squat tree has had in the myths and histories of nearly every religion and culture of the Mediterranean, Middle East and southern Asia.


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    Pinus Delicious (Pinyon Pine) Nov 11, 2021

    This week we chat about the Colorado pinyon pine (Pinus edulis) and its multitude of uses and fascinations. A group of pines, the pinyons, are an interesting evolutionary clade that tend to interbreed where their populations overlap. The seeds of the pinyon, though, are what has led to them being of utmost important to our culinary pantheons.


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    Monopoly: Dutch Edition (Nutmeg) Nov 04, 2021

    The center of conflict and conquest, the Helen of Troy of Trees, the nutmeg (Myristica fragrans) tree has caused international incidents and revolutionized the flavors of cuisines world wide. We talk all about how this tree and the Spice Islands it grows on impacted the world. Then we get a delectable recipe and description of nutmeg that will simply make your mouth water.


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    The Saddest Nut (Almond) Oct 28, 2021

    A historic tree that still shapes our world today, the almond (Prunus amygdalus) is curious member of our culinary pantheon. Once so inedible that it would kill you, now it's one of the most popular and widely grown trees in the world. But with that popularity comes a cost...


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    Goodfungus (Holm Oak) Oct 21, 2021

    An oak that has got it all figured out, the holm oak (Quercus ilex) has made a friend that is worth having. This week we talk about the holm oak and its most famous fungal associate, the Périgord truffle mushroom. Then, we flip the script and Casey gives Alex a chance to play a brand new game...


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    Wicked Itchy Rashes (Mango) Oct 14, 2021

    Mango, one of the world's most beloved fruits is the subject this week. A tropical wondertree, we chat about where the mango is from and its numerous benefits. However, this tree and its family have a dark side that has Casey and Alex keeping their distance... Then, we hear from Daphne K. Jenkins, maker of mochi!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Chris P. Ness (Apple) Oct 07, 2021

    From folk lore to your lunchbox, the apple (Malus domestica) has played a role in our society for thousands of years. In our Season 4 premiere, we chat about the American chapter of that story and we hear just how Casey feels about this ubiquitous fruit tree. Then, it’s another edition of Family Tree!


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    BONUS EPISODE - Completely Arbortrary: Plant-Based Diet - Season 4 Trailer & "Fungal Associates" Sep 30, 2021

    Hi, we're Casey Clapp and Alex Crowson. You're invited to take a seat at the table for Completely Arbortrary Season 4: Plant-Based Diet! That's right, this season we're baking, sautéing, and grilling our way through a cornucopia of trees that feed. We're talking lemon tree, almond tree, and even the dreaded apple. And we're teaming up with chefs from all around to showcase the best ingredients our arboreal friends have to offer, and we're sharing the recipes with you! Can you smell what the trees are cooking? Season premiere on October 7th. Included in this episode is a FREE PATREON EPISODE all about Fungal Associates. Enjoy!


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    F.L.C.T. (Green Ash) Sep 23, 2021

    This week we are closing out our Winter ‘21 Collection with the green ash (Fraxinus pennsylvanica). Though an immensely popular ornamental and street tree, this tree is a huge component of our forest ecosystems, and the invasion of an insect killing them off has had interesting waves throughout the forest. We talk ecosystem ramifying this week and discuss how little, seemingly innocuous, unconnected events can ripple through the forest ecosystem.


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    Wilsonville Bee Kill (Littleleaf Linden) Sep 16, 2021

    This week we review the littleleaf linden (Tilia cordata), a European forest dweller with a heart of gold. We discuss how its generosity is a double-edged sword, and how the delicate web of its ecosystem was abused by humans at the cost of 50,000 precious lives.


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    The Widowmaker (Coulter Pine) Sep 09, 2021

    The tree that’ll kill you back, the Coulter pine (Pinus coulteri) is our topic this week, and we bring in special guest Tobin Mitnik, a Jew who loves trees, to get his hot take on this giant coned conifer.


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    Old, But Still Lit (Bristlecone Pine) Sep 02, 2021

    A god of a tree, blessed with near immortality, this week we discuss the bristlecone pine (Pinus longaeva), who from its high mountain home has diligently recorded a ring every year for millennia.


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    The Return of the King (American Chestnut) Aug 26, 2021

    A true tale of love and loss, the American chestnut (Castanea dentata) is this week’s subject and we discuss its renown, majesty, and stature, and ultimately its untimely demise.


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    The Milkshake Analogy (Western Red Cedar) Aug 19, 2021

    The western redcedar and all its glory today, along with our first interview (!) with Sam Stewart, a guitar craftsman and musician who tells us all ‘bout how wood is used in guitars.


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    Nurse! (Western Hemlock) Aug 12, 2021

    When a tree falls in the forest and no one is around to hear it, does it make a sound? We don’t know! But it sure does make a lovely habitat for a plethora of little creatures and plants. Today we examine nurse logs from the persective of one of the best, the Western hemlock (Tsuga heterophylla), a species that excels at the practice. Then we weigh the odds with The Cone Scale.


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    Tree of Hell (Tree of Heaven) Aug 05, 2021

    INVASION! In this episode we discuss the morality of tree invasiveness, and find ourselves debating the question: who’s invading whom?


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    Ulmus De Niro (American Elm) Jul 29, 2021

    An American legend whose time was cut too short, this week we discuss the American elm and its momentous rise and historic fall in the mean city streets across North America. But, we learn an important lesson that feels all too true across the board.


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    Under(dog)story (Japanese Maple) Jul 22, 2021

    A tree that didn’t ask for the praise, but certainly earns it, this week it’s the Japanese maple and we chat about the undergods of the forest, the understory trees. Then we check in with the Fungal Associated Press.


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    iSpread (Quaking Aspen) Jul 15, 2021

    What is it to be a tree? What is a trees? What are a tree? The quaking aspen has it all figured out, and they (it?) have (has?) been doing it since the ice age. We talk Pando, (re)production, and bay is bae!


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    C-Men (Bradford Pear) Jul 08, 2021

    Is it the perfect tree, as close to ideal as possible, or is it a scourge upon the exotic soils to which it was brought? This week we talk the infamous Bradford pear and boy does this episode stink.


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    BONUS EPISODE - Completely Arbortrary: Classic - Season 3 Trailer & "What is a Tree?" Jul 01, 2021

    Season 3! Completely Arbortrary: Classic This season we're returning to format and covering some long-requested trees, and some house-favorites as well!


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    Mangroves on Mangroves on Mangroves (Red Mangrove) Jun 24, 2021

    Perhaps the most cosmopolitan aquatic tree out there, this week we conclude our world tour with a trip to the waters of the tropics (any of them!) and dive into just what makes mangroves such nifty trees.


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    Insect That's Sensitive to Scents (Mountain Ash Eucalyptus) Jun 17, 2021

    G’day and welcome to the penultimate installation of our Spring ‘21 collection wherein we of course are covering the famous Australian giant, the mountain-ash eucalyptus. The tallest growing angiosperm in the world, and a tree that can fight off nearly everything, this week we discuss the fabulous way eucalyptus trees use chemical defenses to ward off unwanted nibblers...and how some of those nibblers have used that to their advantage.


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    Knotty Yacht (European Larch) Jun 10, 2021

    This week we're discussing the gorgeous and unique European larch (Larix decidua), and we discuss its proclivity for tapping into a wide-reaching fungal network, and fungal networks at large! Then we return... to the Cone Zone.


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    You Say Tomato, I Say (Jacaranda) Jun 03, 2021

    A cosmopolitan tree to say the least, this week we discuss the gorgeous jacaranda tree from south central South America. Dappled shade, incomparable violet blooms, and an attitude to match, we take another look at how urban trees affect us and why it may be a good idea to plant a lot more.


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    Lothlórien (Kauri) May 27, 2021

    When a tree is clearly a god, we don’t question it. This week we head to the northern tip of the North Island of New Zealand and revel in the divinity of the kauris, the towering forest giants who are only outmatched in size by the sequoias and redwoods half a world away. Then we take another kid listener question. Alex is tired!


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    The Drunken Forests (Black Spruce) May 20, 2021

    Permafrost! Phototropism! Thigmomorphogenesis! Big terms with big ideas abound in this boreal episode of Completely Arbortrary, as we trek through the frozen woods of Canada to find the battered and bendy black spruce. We even premiere a brand new segment featuring you, our Fungal Associates. Let’s get tipsy!


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    Strangler Than Figtion (Banyan) May 13, 2021

    Q: A killer, a nursemaid, and a fruit peddler walk into a bar. The barkeep says, “Table for one?” How is this possible? A: The Banyan tree. This week, we have a BIG episode talking about India’s own Banyan tree, and all the hats it wears.


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    God's Wood (Cedar of Lebanon) May 06, 2021

    The tree that helped forge the civilizations of the Mediterranian, and maybe built the mythical Ark, this week we head to the Mountains of Turkey and Lebanon to discuss the Cedar of Lebanon. Join us to hear about this true cedar and its outsized impact on our world.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


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    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Giravves (Umbrella Thorn) Apr 29, 2021

    Do giraffes make trees taller, or the trees make giraffes’ necks longer? This week, we cover the iconic umbrella thorn tree (Vachellia tortilis) of the African savannahs and talk about how evolution may or may not work.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

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    Find Arbortrary merch on our store

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    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Faerie Talk (Common Hawthorn) Apr 22, 2021

    A portal to other worlds, the home of faeries, or the flower that sparks a little twinkle in your eye, the common hawthorn is a tree that is as understated as it is revered. This spring bloomer is planted all over the world as a street tree, and grows commonly in the forests and hedgerows of Europe and the UK. Ushering in the season of productivity and all the fun of warming weather, this is surely a tree that has earned its reputations and representations, for good or evil.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

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    Find Arbortrary merch on our store

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    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Painting With Nature (Japanese Cherry) Apr 15, 2021

    Kon'nichiwa! This week we jet over to Japan to discuss a gorgeous, renowned, and cultivated-like-heck tree, the Japanese cherry (Prunus serrulata). Dive deep into cultivar(ism) with us while we talk about Shinto, picnics, and painting with nature. As always, we finish the whole shebang with a listener question.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

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    Find Arbortrary merch on our store

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    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Pehuén (Monkey Puzzle) Apr 08, 2021

    The first episode of the Spring 2021 Collection: a Global Traverse. This week we travel to the southern hemisphere to dive into what makes the monkey puzzle tree so dang interesting. From ancient roots to endemic speciation, we chat about this relic from another time. Then we play a new game. Welcome back!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

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    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Completely Arbortrary: World Tour! Apr 01, 2021

    It's season 2 of Completely Arbortrary! They (Alex) said we couldn't make it! This season we're globetrotting to talk about a smattering of international trees.


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    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    The Perfect Flower (Southern Magnolia) Mar 25, 2021

    It’s the end of our first season and, to celebrate, we’re talking about a blooming beauty with a perfect flower, the Southern magnolia (Magnolia grandiflora). Mr. Bean beetles, ancient sex organs, and one intelligent flower that knows how to get it done. Then we play a fun game about ancient Greek gods and answer a listener question. See you next season!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

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    Find Arbortrary merch on our store

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    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Yee-Haw! (Ponderosa Pine) Mar 18, 2021

    This week we head out west and marvel at the orange-clad giants of the pine world, the ponderosa pine (Pinus ponderosa). We dive into one of the most interesting weather phenomena in the world, the rain shadow effect, and chat about how seemingly unrelated patterns of geology and weather change who grows where. Then, you guessed it, we ruminate on the nature of sasquatch.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

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    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Liquid Sunshine (Sugar Maple) Mar 11, 2021

    Welcome to Vermont, sugar! This week we're charging headlong into the snowy forests of the Northeast United States to tap one of the sweetest trees in the game, the Sugar Maple! Sap, syrup and sugar... this one goes out to the sweet tooths.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

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    Find Arbortrary merch on our store

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    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    New Roots, New Shoots (Black Willow) Mar 04, 2021

    The tree that does it all. This week we dive into what makes the black willow (Salix nigra), and willows more broadly, such revered trees. From curing your dysentery or soothing an aching tooth to restoring wetlands and always putting out new roots and new shoots, this tree has something for everyone.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

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    Find Arbortrary merch on our store

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    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Death by 1,000 Beetles (Lodgepole Pine) Feb 25, 2021

    This week we're talking about the tragic tale of the Lodgepole pine (Pinus contorta). Human greed, voracious beetles, and graveyard forests... it's our most depressing episode yet!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

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    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Street Tree Manifesto (European Hornbeam) Feb 18, 2021

    This week we're taking it to the streets to discuss the European Hornbeam (Carpinus betulus). Casey waxes poetic about his great interest and love for urban forests, which includes explaining to Alex what an urban forest actually is. Then we answer a question from a listener about trees and climate change.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

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    Find Arbortrary merch on our store

    Find additional reading on our website


    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    met-a-se-KOY-a glyp-to-stro-BOY-des (Dawn Redwood) Feb 11, 2021

    A sleeping giant awakens! Enter dawn redwood (Metasequoia glyptostroboides). The deciduous conifer (gasp!) dominated the Northern hemisphere for thousands of millenia before Mother Nature spirited it away entirely… or so we thought. Then, we take a journey through time and space as we journey The Cone Zone.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

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    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    The Tree Before Time (Ginkgo) Feb 04, 2021

    What smells like barf, lived with dinosaurs, and makes for a great tattoo? This tree! Ginkgo (Ginkgo biloba) is a living fossil; a tree so old it lived among prehistoric monsters, and so long-lived that it lives among modern humans. A true survivor, this tree spent thousands of millenia hermitting in its little corner of China. But today we've all got Ginkgo fever, and this ancient species is now planted worldwide and beloved by many. It's a vomit-scented episode that'll really stick with you.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website


    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Jupiter's Nut! (Black Walnut) Jan 28, 2021

    Villainous arboreal poisoner, or misunderstood forest benefactor? Despite its bipinnately gorgeous appearance and emotional significance to the general public, the black walnut (Juglans nigra) has spent decades under the critical gaze of tree lovers for its allegedly allelopathic behavior. But when new studies come to light, this cold case turns red hot! Misophonia warning: candied nuts will be munched.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website


    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Terrible, Horrible, No Good, Very Bad Tree (Arborvitae) Jan 21, 2021

    Gather 'round to hear the unfortunate tale of the arborvitae (Thuja occidentalis), a tree that's truly less than the sum of its parts. A mass-produced hedge tree in the Cypress family that's exploited on west coast surbuban streets, this tree has plenty of faults and makes for good gossip. But can a tree be inherently bad, or is a tree made bad by the people who plant it? Then stick around for our first ever game, Binomial Bonanza!


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

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    Find Arbortrary merch on our store

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    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Squirrel Talk (Oregon White Oak) Jan 14, 2021

    SQUIRRELS! Today we burrow head first into a discussion of the Oregon white oak (Quercus garryana), another house favorite tree named by David Douglas, and our first broadleaf species. Most years these mighty acorn-makers supply local squirrel populations with plenty of food for winter. But what happens when an oak takes the year off, and how does that affect the squirrel world (or, Squirrorld ™)? Are squirrels organizational geniuses... or do they simply think like squirrels? How many times can you say the word "squirrel" until it starts to sound like gibberish? All these answers and more, on this episode of Completely Arbortrary.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Support the pod and become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website


    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Episode I: The Phantom Fir (Douglas-fir) Jan 07, 2021

    What's up, Fungal Associates! Welcome to Completely Arbortrary, the podcast about trees and other related topics. In our inaugural episode, we discuss the crown jewel of the Great Pacific Northwest, the Douglas-fir (Pseudotsuga menziesii). Named after botanist David Douglas, this false fir is a house favorite and a perfect choice for Christmas trees. While we're at it, what is a fungal associate? We start our PR campaign for these fungal friends in this, our first episode of Completely Arbortrary.


    Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson


    Become a Treemium Member

    Follow along on Instagram

    Find Arbortrary merch on our store

    Find additional reading on our website


    Cover art by Jillian Barthold

    Music by Aves and The Mini-Vandals

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

    Completely Arbortrary: The Trailer! Dec 18, 2020

    Tree zealot Casey Clapp and tree agnostic Alex Crowson review and rate your favorite arboreal friends. A semi-educational, basically pleasant, and fully unnecessary romp through the annals of treedom. --- Support this podcast: https://anchor.fm/arbortrarypod/support
    This show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5803202/advertisement

    See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

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