Obnoxious Plants! - Episode 2: Poison Oak & Poison Sumac

You're sure you only touched trees on your hike today, right? But
why are you soooo itchy? Perhaps it was because of a tree! Join
us as we discover the tree (or woody shrub) that might be the
bane of your next outdoor activity - unless you listen to this
show and learn how to identify poison sumac. ;)