Merry Christmas! Let’s gather ‘round the Moodjar (Nuytsia floribunda). But look out, this fascinating tree has a few quirks that make it an expert parasite. Then we play a game, The Mood Jar! See you 2025.

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

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Only two wise men showed up. But, good news: they brought frankincense (Boswellia sacra) and myrrh (Commiphora myrrha), two storied plants known for their seemingly endless beneficial properties and their role in the legend of the birth of Jesus.

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

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The gumbo-limbo (Bursera simaruba) is living that hummock life, and loving every minute of it. This resiliant tree stays low to the ground and says “who cares” to hurricanes, making it a stalwart, understated addition to upland subtropical climes. Then we discuss what happens when billionaires want a better view.

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

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In an episode heavy with rants and strong opinions, we discuss the yellow birch (Betula alleghaniensis). Leafblowers, giant earthworms, and birches all collide in this dense episode of Completely Arbortrary. Then, we answer a question about the most satisfying falling leaves.

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

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Would you like a cup of tea? Try the gourd herb (Ilex paraguariensis), a tropical tree famous for its massive contribution to the world of drinkables.

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

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Life goes on... and on... and on... for the curlleaf mountain-mahogany (Cercocarpus ledifolius). What can we learn from this long-lived, tough-as-nails tree? Then, we take a listener question about fallen trees!

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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In the second of our “odd Pine family distant cousins” we talk Keteleeria (Keteleeria davidiana), and the perfect pocket of China where this and many other species call home.

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

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In this episode, we explore the golden-larch (Pseudolarix amabilis), a unique member of the pine family that feels a bit like the “weird cousin at the Pine family picnic.” Once native to the Arctic, this deciduous conifer now grows exclusively in specific regions of China, adapting over millennia to its new home. We also dive into a listener question about variegated leaves and why some plants sport these striking patterns.

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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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

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Cover art by Jillian Barthold

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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

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Cover art by Jillian Barthold

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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

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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.