![]() Touching poison ivy directly is obviously a bad idea. ![]() Urushiol is what gives poison oak and poison sumac their evil power, too. You can occasionally see the urushiol oil as black spots on poison ivy leaves. In fact, 85% to 90% of people are allergic to poison ivy’s urushiol to some degree, while the rest lack sensitivity to this oil. It carries an oily sap on its leaves and stems called urushiol, which is irritating to most people’s skin. Sometimes there are flowers or fruits coming off the end of a branch.ĭespite its name, poison ivy is not poisonous. You can usually spot poison ivy by its infamous three dull or glossy green leaves coming off a red stem. Climate change is turning out to benefit poison ivy, allowing for larger and more irritating plants. Its leaves, stems and berries are food for animals, and its vines can be shelter for small animals like toads and mice, even helping them climb trees. Its favorite places are in wooded areas, gardens and roadsides with partial shade or full sunlight.Īnd despite being a nuisance to people, poison ivy is an important member of the ecosystem. Unfortunately for us humans, it is a hardy plant that can grow under many different conditions. ![]() Poison ivy is found everywhere in the continental U.S., mostly in Eastern and Midwestern states.
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