Villainous arboreal poisoner, or misunderstood forest benefactor? Despite its bipinnately gorgeous appearance and emotional significance to the general public, the black walnut (Juglans nigra) has spent decades under the critical gaze of tree lovers for its allegedly allelopathic behavior. But when new studies come to light, this cold case turns red hot! Misophonia warning: candied nuts will be munched.

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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