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PODCAST

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.

science

All Episodes

00:50:41

It's The End of Completely Arbortrary (As We Know It)

Completely Arbortrary ·

2026/01/01

It's been 5 years of weekly tree podcasts, but after this final season, Casey and Alex will be moseying on to the next chapter for an extended hiatus. Buckle up for THE FINAL SEASON 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.

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01:17:22

How Water Moves Through Trees (Oyster Bay-Pine)

Completely Arbortrary ·

2025/12/25

Turgor pressure, negative pressure, vessels and tracheids, embolisms… It’s a fact-packed Christmas Day episode of Completely Arbortrary, featuring the Oyster Bay-pine (Callitris rhomboidea). This drought tolerant tree has a surprising mechanism for keeping its water closely guarded. Merry Christmas!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

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01:18:02

Underplanted, Underrated, Underappreciated (Japanese...

Completely Arbortrary ·

2025/12/18

Underrated, underplanted, underappreciated… so why isn’t the Japanese pagodatree (Styphnolobium japonicum) a more popular as a street tree in our urban forests?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

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01:14:36

Ivory & (Ebony)

Completely Arbortrary ·

2025/12/11

work together in perfect harmony (guitar reference). Today, learn all about the ebony (Diospyros ebenum), it's typical path through capitalism, and the guitar luthier who gave it back to the world. 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

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01:00:05

The Odysseed (Lotus Tree)

Completely Arbortrary ·

2025/12/04

Hop aboard the good ship Odyssey to make for the island of the lotus tree (Diospyros lotus). But, could this be a case of mistaken idenitree?...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

en

01:11:22

Holiday Merch Sale + Urban Trees and Racism

Completely Arbortrary ·

2025/11/27

As we take a quick break we're here to remind you that our holiday merch sale ends ON BLACK FRIDAY, and reintroduce you to our talk on urban trees and racism. 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

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01:10:19

BONUS EPISODE: Fungus in the Fall

Completely Arbortrary ·

2025/11/20

As the boys take a much needed break from the wild world of modern podcasting, they present to you the audio from a 2023 livestream entitled Fungus in the Fall.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

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01:00:23

Splitting Facts (Weeping Juniper)

Completely Arbortrary ·

2025/11/13

So many junipers, so little time. So let’s pick one! How about the weeping juniper (Juniperus flaccida)? Buckle up, it’s gonna be a bumpy one.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

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01:04:51

Goin' Thig Mode (Fraser Fir)

Completely Arbortrary ·

2025/11/06

The boys are joined by their first ever third host to discuss goin' thig mode with thigmomorphogenesis and the Fraser fir (Abies fraseri). Then, a test of Casey's binomial spelling skills with The Spelling Tree. 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

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01:09:39

Deal with the Devil (Bigleaf Magnolia)

Completely Arbortrary ·

2025/10/30

BEEware of the bigleaf magnolia (Magnolia macrophylla). This tree made such a strong alliance with beetles, that any other insect trying to get in gets KILLED. Then we play a Halloween edition of Family Tree!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

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00:58:27

Lil' Apple Make This Horse Go Crazy (Manzanilla de la...

Completely Arbortrary ·

2025/10/23

DO NOT TOUCH this week’s tree (Hippomane mancinella), it makes horses go crazy!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

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00:51:35

Mummy and Me (Coffintree)

Completely Arbortrary ·

2025/10/16

We need a tall, straight, decay-resistant, fragrant wood… call THE COFFINTREE (Taiwania cryptomerioides). Why has this tree been used consistently for coffin wood?…. Nobody knows (including us!).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

en

01:12:44

Creature from the Black Tea Lagoon (Swamp Tupelo)

Completely Arbortrary ·

2025/10/09

Out of the black tea lagoon comes a swamp monster! It’s the swamp tupelo (Nyssa biflora)—swollen butt and all—who has learned how to breathe… underwater.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

en

01:03:56

Sectored Architecture (Rocky Mountain Bristlecone Pine)

Completely Arbortrary ·

2025/10/02

What if your left foot was in charge of keeping your left hand alive? What if your right big toe was responsible for the right ear? With sectored architecture, the future is now! (Actually, it's about 2000 years ago). Join us for a discussion of the Rocky Mountain bristlecone pine (Pinus aristata) and remember to use coupon code BLOWOUT for 30% off everything at arbortrarypod.com/merchCompletely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson Support the pod and become a

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01:19:26

Pavlova (The Fruit That Serves Itself)

Completely Arbortrary ·

2025/09/25

The maracuya, the passionfruit, the fruit that serves itself (Passiflora lindeniana) produces one of the best fruits in the world (unbiased opinion), which lends its flavor to one of the best desserts in the world (unbiased opinion). 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

en

01:06:49

Zwetschgenkuchen (European Plum)

Completely Arbortrary ·

2025/09/18

Did you save room for dessert? We're having zwetschgenkuchen, or German plum cake, made with the European plum (Prunus domestica).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

en

01:06:01

Baesuk (Asian Pear)

Completely Arbortrary ·

2025/09/11

Asian pear (Pyrus pyrifolia) is the centerpiece of a Korean dish called baesuk; a dessert even Frankenstein would love.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

en

01:06:55

Baklava (Pistachio)

Completely Arbortrary ·

2025/09/04

It's Plant Based Diet: Just Desserts, where we talk about 4 of the world's sweetest trees. First up, the pistachio! (Pistacia vera) Hear all about its origins in the Middle East and the dessert that made it famous: baklava. 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

en

01:04:18

Buzz Pollination (Bigberry Manzanita)

Completely Arbortrary ·

2025/08/28

Buzz buzz! Let’s connect some pollen the new fashioned way with the Bigberry Manzanita (Arctostaphylos glauca).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

en

00:44:44

BONUS EPISODE: What is Bark? + Alex's Hawaiian Adventure

Completely Arbortrary ·

2025/08/21

What's up Fungal Associates!? This week we have part 2 of our bonus episode fortnight and bring you "What is Bark?" Which asks the question.... well, what is bark? We'll see you next week with new episodes!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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265 results

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