Completely Arbortrary
Tree advocate Casey Clapp and his tree-curious friend Alex Crowson host a podcast about trees and related topics. They explore history, culture, art, religion, and science to show how trees affect and are affected by everything. Join them on their silly and educational journey to prove the importance of trees.
Episodes
Putrid Gums & Dreadful Terrors (Meyer Lemon)
Originally aired 12/16/2021Join the Cone Club, our snail-mail botanical sticker club!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy
Spoonful of Sugar (Noni)
Originally aired 3/16/2023Join the Cone Club, our snail-mail botanical sticker club!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy
Milkshakes (Western Red Cedar)
Originally aired 8/19/2021Join the Cone Club, our snail-mail botanical sticker club!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy
Fancy Timbers (Cedar of Lebanon)
Originally aired 5/6/2021Join the Cone Club, our snail-mail botanical sticker club!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy N
What's in a Name? A Lot (Ghost Pine)
Originally aired 10/26/2023Join the Cone Club, our snail-mail botanical sticker club!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy
Only the Lonely (Kentucky Coffeetree)
Originally aired 4/20/2023Join the Cone Club, our snail-mail botanical sticker club!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy
Sakura, Hanami, Shinto, Kami (Japanese Cherry)
Originally aired 4/15/2021Join the Cone Club, our snail-mail botanical sticker club!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy
Chock-Full of Deadly Poison (Sea-Mango)
Originally aired 10/31/2024Join the Cone Club, our snail-mail botanical sticker club!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy
Fruit That Serves Itself (Passionfruit)
Originally aired 9/25/2025Join the Cone Club, our snail-mail botanical sticker club!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy
Night Vision (Honey Locust)
Originally aired 10/19/2023Join the Cone Club, our snail-mail botanical sticker club!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy
Situationship (Trumpet Tree)
Originally aired 8/18/2022Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and join the Cone ClubFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://ar
That's the Game of the Name (Nootka Cypress)
Originally aired 6/12/2023Join the Cone Club, our snail-mail botanical sticker club to support the pod. Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and join the Cone ClubFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy P
Pirate's Booty (Coco-de-Mer)
Originally aired 3/28/24Join the Cone Club, our snail-mail botanical sticker club to support the pod.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and C
Silk Road Kill (White Mulberry)
Originally aired 4/28/2022Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and join the Cone ClubFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://ar
Das Root (Sassafras)
Originally aired 12/9/2021Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and join the Cone ClubFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://ar
Boioioioing (Rubber)
Originally aired 2/27/2025Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and join the Cone ClubFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://ar
Death Row Chocolate Milk (Cacao)
Originally aired 12/23/21Join the Cone Club, our snail-mail botanical sticker club to support the pod. Link in the bio!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini
Positively Petrified (Rainbow Wood)
Originally Aired 10/27/2022Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at htt
Shinto My God! (Sakaki)
Originally aired 12/07/2023Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at htt
Hades! Hades! Hades! (English Yew)
Originally aired 1/27/2022Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/priva
Episode III: Revenge of the Pith (Douglas-fir 3)
In our final mainline episode of Completely Arbortrary, we revisit the tree that started it all: the Douglas-fir (Pseudotsuga menziesii).Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our webs
Wood Vibrations (Wild Whiskey Cherry)
In our penultimate episode of Completely Arbortrary (as we know it), we discuss the wild whiskey cherry (Prunus serotina) and its many wooden accolades.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading o
BONUS EPISODE: Trees of the Deserts
Alex is unexpectedly out this week so you get a bunch of ums and uhhs from Casey along with an audio essay about desert trees!See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.
Anastasianism (Siberian Stone Pine)
Be one with the land (and also learn teleportation) with Anastasianism, a religion centered around the Siberian stone pine (Pinus siberica).Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our w
How Casey Learned to Stop Worrying and Love the Apple (Apple 3)
260 episodes and 5 years later, and Casey has found an apple he loves, (Malus hupehensis), which he dubs by far the most interesting apple in the world.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading o
Are You There, Fog? (Coast Redwood 2)
Fog: the coast redwood's strongest ally through a process called folial uptake.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini
Reinventing the (Wheel Tree)
Don't go reinventing the wheel tree (Trochodendron aralioides), it certainly isn't.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The
Even Older Growth (Western Juniper 2)
You’ve heard of old growth forest… but how about old growth woodland? For more info, ask the western juniper (Juniperus occidentalis), a tree that is helping to redefine the meaning of old growth. Then, we play a brand new game!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary me
Renaissance Tree (Superb Schima)
A tree that lacks nothing… except for name recognition: the superb schima (Schima superba) (yes, that is its real name.)Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Min
Cones on the Spectrum (Celerytop-Pine)
Forget everything you thought you knew about conifers, and make way for the celerytop-pine (Phyllocladus aspleniifolius) with leaves and cones like no other, and raises the question “what is a conifer”?Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrar
Evolutionary Naïveté (Blue Ash)
When the emerald ash borer came to North America, few ashes survived. But one native species, the blue ash (Fraxinus quadrangulata), survived. How did this lucky survivor beat the odds?Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on
Bird Influence (Limber Pine)
Today we discuss our flexible friend the limber pine (Pinus flexilis) and its curious co-evolutionary relationship with, you guessed it, BIRDS.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMu
Burning Hot Fresh Root News (Scots Pine)
Welcome to Season X of Completely Arbortrary, our final hoorah! To begin the end, we talk about senses of smell and the Scots pine (Pinus sylvestris).Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian Bar
It's The End of Completely Arbortrary (As We Know It)
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.
How Water Moves Through Trees (Oyster Bay-Pine)
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 CrowsonSupport the pod
Underplanted, Underrated, Underappreciated (Japanese Pagodatree)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by J
Ivory & (Ebony)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additiona
The Odysseed (Lotus Tree)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdM
Holiday Merch Sale + Urban Trees and Racism
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Ji
BONUS EPISODE: Fungus in the Fall
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by J
Splitting Facts (Weeping Juniper)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMus
Goin' Thig Mode (Fraser Fir)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our
Deal with the Devil (Bigleaf Magnolia)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind
Lil' Apple Make This Horse Go Crazy (Manzanilla de la Muerte)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://ar
Mummy and Me (Coffintree)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional r
Creature from the Black Tea Lagoon (Swamp Tupelo)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian
Sectored Architecture (Rocky Mountain Bristlecone Pine)
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/merchCom
Pavlova (The Fruit That Serves Itself)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortr
Zwetschgenkuchen (European Plum)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves a
Baesuk (Asian Pear)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini
Baklava (Pistachio)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch
Buzz Pollination (Bigberry Manzanita)
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 CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-Vandals
BONUS EPISODE: What is Bark? + Alex's Hawaiian Adventure
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.
BONUS EPISODE: What is Soil? + Casey's Throat Catastrophe
What's up Fungal Associates! For the next two weeks we bring you some OLD SCHOOL bonus episodes (circa 2021). Why? Well, because Casey took a frisbee to the throat, and Alex took a vacation to Hawaii. Classic! Enjoy this break as I know we will <3See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.
All Trees Go To Heaven (American Beech)
I think, therefore I am... a tree - American Beech (Fagus grandifolia)Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy at https://art19.com/p
Keyaki (Japanese Zelkova)
The tree you don’t know that you know, but you know it! The Japanese zelkova (Zelkova serrata) is the center of a fascinating tale of isolationism, plant espionage, and gunboat diplomacy.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading o
Insultivar (Chokecherry)
Don't go chokin' on this cherry (Prunus virginiana) or else you may turn red! And Canadian!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-VandalsSee Privacy Policy a
Dial M for (Maxipiñon)
A mystery cone… a mystery tree! What the maxipiñon has to say about genetic bottlenecking may unlock its secrets!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-Vanda
Zombie Survivors (Vietnam Cypress)
What happens when trees have to run for their lives and the only way is up? The Vietnam cypress (Xanthocyparis vietnamensis), that's what!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic b
There's Always Money in the (Banana Tree)
It’s a BANANZA with the banana (Musa acuminata), a fruit so popular that it helped shape the political landscape of the world. Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and
The Lean (Cook Island Pine)
Lazy, back problems, or just a Fonzie-esque casual attitude? Whatever the reason, the Cook Island pine (Araucaria columnaris) leans mysteriously toward the equator. Let’s discuss the possibilities! Then, we play a game about Filipino pines and oaks—The Filipineoak Affair.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium Membe
The New Mahogany (Ipê)
Introducing... TROPICAL VACATION! 🌺 a series all about tropical trees! Our first visit is Brazil, where the ipê (𝘏𝘢𝘯𝘥𝘳𝘰𝘢𝘯𝘵𝘩𝘶𝘴 𝘪𝘮𝘱𝘦𝘵𝘪𝘨𝘪𝘯𝘰𝘴𝘢) reigns supreme. This tree has no shortage of strengths, quite literally! From decking to medicine, this tree has it all. Then, we play a special musical edition of The Slang Game.Completely Arbortrary is produced and hosted by Casey Clapp and Alex Cro
BONUS EPISODE: Treeasy Listening #1
Kick back with Casey and Alex while we play you our favorite jams from recent days. Become a Treemium Member at arbortrarypod.supercast.com to enjoy bonus episodes like this one, ad-free listening to mainline episodes, 20% off our merch store, and join the Cone Club to get monthly botanical stickers mailed directly to you!Completely Arbortrary is produced and hosted by Casey Clapp and Ale
Parthenocarpy (Paperbark Maple)
Parthenowhatnow? Parthenocarpy! Why are 90% of the paperbark maple's (Acer griseum) infertile? Only nature knows.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jillian BartholdMusic by Aves and The Mini-Vanda
Trunk Drawer (Governor's Plum)
It's a bit of governor's plum, innit? (Flacourtia indica) But where to put it? This wayward species finally found a home with the willows, but what happens to those unlucky species who spend their lives in the taxonomic junk drawer?Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrar
Bean Leaves in Bondage (Silk Tree)
Let's get kinky with the silk tree (Albizia julibrissin). This beautiful tree has a very curious way of keeping its leaves close to the stem. Then we finish our game series Fight Shrub!Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson Support the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional readi
Reversion Therapy (White Spruce)
What happens when a tree mutates? In the case of the white spruce (𝘗𝘪𝘤𝘦𝘢 𝘨𝘭𝘢𝘶𝘤𝘢) it creates a dwarf version of itself. But that version doesn't always grow that way forever. Then, we have the second round of Fight Shrub!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on o
Fight Shrub (Butternut)
Put up your dukes, for a battle between the city, the people, and the trees. At the center is butternut (Juglans cinerea), and it's shading you, your neighbor, and your neighbor's neighbor. Then we play a new game with one rule... you do not talk about Fight Shrub.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow
What a (Knobcone Pine)!
Who started the fire? It may have been the knobcone pine (Pinus attenuata) in a ditch attempt to RELEASE THE SEEDS! This curious pine has a curious way of dispersing which includes fire, cones, and cannibalism.Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson Support the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our s
Anomalous Secondary Growth (Ombú)
Anomalous secondary growth! What in the world is it? Just ask the ombú (Phytolacca dioica), pokeweed’s tree-like cousin. It doesn’t make wood, it makes “anomalous secondary growth”, an endlessly interesting way to grow. Then, we answer a question about the perfect flower/tree pairings.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a
Golden Cone Ratio (Austrian Black Pine)
The Golden Ratio: a fact of life on Earth, or an copy and pasted alien blueprint? Perhaps the answer lies in the cones of the Austrian black pine (Pinus nigra). Let’s discuss Phyllotaxis, the mathematical means by which plants remain in light.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFin
BONUS: Lord of the Tree Rings Marathon
What's up, Middle-Earthlings! Casey and I are taking a much-needed break this week, and so we present to you a hilariously massive extended edition episode that includes all three episodes of our Lord of the Tree Rings series, originally published in March of 2022. New episodes starting next week! Take care, everyone.Completely Arbortrary is produced and hosted by Casey Clapp and Alex Cro
Inside Sprout: Joy (Money Tree)
What makes you happy? Is it money? Or maybe it’s the money tree (Pachira aquatica). This famous houseplant is also a forest tree, so why did it become synonymous with feng shui, harmonious qi, and interior design? Then we play a new game of Happy Go Lucky!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on
Inside Sprout: Sadness (Weeping Cherry)
What makes trees weep? Perhaps the answer lies in the aptly named weeping cherry (Prunus x subhirtella 'Pendula'). Today we talk gravitropism and why some plants just have it backward. Then, we listen to you tree-themed Beatles covers and announce the winner of THE HAT!Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberF
Inside Sprout: Anger (Jeffrey Pine)
What makes you angry? Is it the Jeffrey pine (𝘗𝘪𝘯𝘶𝘴 𝘫𝘦𝘧𝘧𝘳𝘦𝘺𝘪)? Perhaps it’s the smell, a controversial topic among tree lovers that causes all sorts of anger.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on InstagramFind Arbortrary merch on our storeFind additional reading on our websiteCover art by Jil
Inside Sprout: Fear (Silver Maple)
Why are we so afraid of the silver maple (Acer saccharinum)? Perhaps because of the risk involved. In today’s episode of Inside Sprout, we discuss tree risk assessment as we ask ourselves the question: if a tree falls, and no one is around to see it, is there any risk?Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFo
Inside Sprout: Disgust (Black Locust)
Welcome to Inside Sprout, a 5 part mini-series on trees that best embody and illicit our most basic human emotions. Today we start with disgust and the black locust (Robinia pseudoacacia). This tree is almost universally despised for its invasiveness, but has found a very important and loving niche for itself in the woodworking community.Completely Arbortrary is produced and hosted by Cas
Ball is Life (Rubber)
Take me out to the ball game… the one where they bounce a solid rubber (Castilla elastica) ball between their hips. Today we take it way back for a discussion about rubber (the tree) and rubber (the substance) and an ancient ballgame that’s still played today.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow alo
Little Kid (Balsa)
The lightest wood there is, the balsa (Ochroma pyramidale) is one excited little kid. It grows fast, has ice cream cone flowers, and you can even carry it around on your shoulders! But what gives this tree the ability to grow in such a famous way?Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod and become a Treemium MemberFollow along on Instagra
The Chipko Movement (Banj Oak)
In the second part of our eco-feminism series, we discuss the Chipko movement, a practical manifestation of eco-feminist ideologies out of India. Author/activist Vandana Shiva makes an appearance, as does the Banj oak (Quercus leucotrichophora). Then, we play a medieval edition of the Slang Game.Completely Arbortrary is produced and hosted by Casey Clapp and Alex CrowsonSupport the pod an
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