A helpful old saying is “leaves of three, let it be,” according to the U.S. Centers for Disease Control and Prevention. But poison oak may have more than three leaves, and depending on the ...

Poison ivy produces small, white, or yellow berries, and its leaves turn red in the fall. Poison oak is similar in appearance to poison ivy but is usually found as a shrub rather than a vine.

THE TASTE of young poison oak is surprisingly mild, grassy and only a little bit tart. Two dozen glossy green-and-red leaves ...