Rash Plants

There are several plants in North America that can cause any number of skin conditions; poison ivy and poison oak are two of the most common and recognizable. There are others like poison sumac and poisonwood that deliver a similar itchy rash caused by urushiol oil, but are seldom encountered, while other less familiar species may cause severe burns and scarring such as giant hogweed (click image below), cow parsnip and wild parsnip.