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Completely Arbortrary

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.

  • 1 hour 5 minutes
    Death Row Chocolate Milk (Cacao)

    Originally aired 12/23/21


    Join 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 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.

    30 April 2026, 7:00 am
  • 44 minutes 32 seconds
    Positively Petrified (Rainbow Wood)

    Originally Aired 10/27/2022

    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.

    23 April 2026, 7:00 am
  • 57 minutes 39 seconds
    Shinto My God! (Sakaki)

    Originally aired 12/07/2023

    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.

    16 April 2026, 7:00 am
  • 58 minutes 24 seconds
    Hades! Hades! Hades! (English Yew)

    Originally aired 1/27/2022

    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.

    9 April 2026, 7:00 am
  • 1 hour 35 minutes
    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 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.

    2 April 2026, 7:00 am
  • 1 hour 15 minutes
    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 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.

    26 March 2026, 7:00 am
  • 10 minutes 36 seconds
    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.

    19 March 2026, 7:00 am
  • 1 hour 13 minutes
    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 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.

    12 March 2026, 7:00 am
  • 1 hour 12 minutes
    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 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.

    5 March 2026, 8:00 am
  • 1 hour 10 minutes
    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 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.

    26 February 2026, 8:00 am
  • 1 hour 3 minutes
    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 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.

    19 February 2026, 8:00 am
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