Poison ivy is one of the most frequent causes of skin rash among children and adults who spend time outdoors. A rash from poison ivy is caused by an oil found in these plants called urushiol. When this oil touches your skin, it often causes an itchy, blistering rash. How does Poison Ivy look Poison ivy, an aggressive native plant that grows all over our territory. Poison ivy can grow as a vine, as a shrub, or even creeping along the ground. It can recognised by its leaf which