Toxicodendron radicans, Poison IvyToxicodendron radicans Common Name(s): Eastern Poison Ivy Poison Ivy Poison Oak Previously known as: Rhus radicans Phonetic Spellingtoks ee ko DEN dron RAD ee kans This plant has high severity poison characteristics. See below Description Poison ivy is native throughout the United States and much of southern Canada and can be found in a wide variety of locations including dry or wet woodlands, thickets, valleys, clearings, fence rows, roadsides and