Poison ivy is a vine or shrub that has three glossy leaves and grows in much of the United States and Asia. so you can touch them, grow them and study them without getting poisoned. Giant hogweed is stronger than poison ivy. Poison Ivy is the most common poisonous plant you'll encounter and causes an itchy rash for most people who touch it. There are, however, distinct characteristics by which they can be identified. To see a listing of native and invasive plants of British Columbia visit: E-Flora BC. Find out more about common poisonous plants and how to avoid them. You handle them (or, god help you, eat them) and then, hours later, you realize your very VERY serious mistake. Poison ivy's rash-inducing quality comes from an oil called urushiol. 5 Common Poisonous Plants Environment Outdoor Guides November 16, 2011 caption climbing vine common poisonous plants don8217t touch 5 common poisonous plants north america poison ivy vine poison oak poisonous plants regions of mexico serious allergic reaction 884 Views 4 … Found throughout most of North America and mountainous regions of Mexico, poison ivy is not a true ivy, although it bears resemblance to many ivies. Toxicodendron radicans, commonly known as eastern poison ivy or poison ivy, is a poisonous Asian and Eastern North American flowering plant in the genus Toxicodendron.The species is well-known for causing urushiol-induced contact dermatitis, an itchy, irritating, and sometimes painful rash, in most people who touch it.The rash is caused by urushiol, a clear liquid compound in the plant's sap. Despite its common name as an ivy, poison ivy is not a true ivy because it does not always climb. Ivy can become so dense as to exclude other native species creating ivy "deserts", even becoming so heavy as to topple trees - something which does not occur in its native habitat. The three leaves grow on their own stem, connected to a vine which is also extremely poisonous and … The oil is tenacious; if it gets onto your clothing or pet, you can wind up with a rash long after you leave the woods. - Sarufan - Anime & Comics - Well this is basically poison ivy in Marvel universe Disclaimer I do not own any of t No, they are not poisonous unless we eat them. Holly was her god. While the leaves are the most toxic part of the plant, contact with any part (even when the plant is bare of foliage) can cause an allergic reaction.