Poison ivy, poison oak, and sumac all have a resin called urusiol which causes the bumps, blisters and itching after you’ve touched it or brushed against it. You need to learn to recognize these plants. Poison ivy is a vine that grows on the East Coast, Midwest and South. In the North and West it’s [...]
poison ivy
July 8th, 2008 · No Comments · General
Tags: poison ivy·poison oak·sumac
