Episodios

  • Anastasianism (Siberian Stone Pine)
    Mar 12 2026

    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

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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.

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    1 h y 13 m
  • How Casey Learned to Stop Worrying and Love the Apple (Apple 3)
    Mar 5 2026

    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.

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    1 h y 12 m
  • Are You There, Fog? (Coast Redwood 2)
    Feb 26 2026

    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.

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    1 h y 10 m
  • Reinventing the (Wheel Tree)
    Feb 19 2026

    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.

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    1 h y 3 m
  • Even Older Growth (Western Juniper 2)
    Feb 12 2026

    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 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.

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    1 h y 31 m
  • Renaissance Tree (Superb Schima)
    Feb 5 2026

    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 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.

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    1 h y 9 m
  • Cones on the Spectrum (Celerytop-Pine)
    Jan 29 2026

    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 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.

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    1 h y 20 m
  • Evolutionary Naïveté (Blue Ash)
    Jan 22 2026

    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 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.

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    1 h y 1 m