![]() Sensitive people often develop a severe skin rash within hours after contact. Some people are more sensitive than others to the effects of poison ivy. Even dead plants or roots may cause allergic reactions for a couple of years. ![]() Therefore, anything that may carry the oil should be carefully washed. It can be picked up on tools,clothing and the fur of pets. The oil can remain active for months on objects. Urushiol is a colorless or slightly yellow oil found in the leaves, stems and roots. The entire plant is poisonous because all parts contain the irritating oil urushiol. ![]() Most mature poison ivy plants will flower and produce clusters of white, waxy fruit. pubescens) looks similar to poison ivy, but it generally grows more upright and has hairs on both upper and lower leaf surfaces. The edges of the leaflets can be smooth, wavy, lobed or toothed. Poison ivy has compound leaves that occur in threes (trifoliate or three leaflets). As a vine, it attaches itself to trees or other structures with hairy, aerial roots borne along the stem. Joey Williamson, ©2010 HGIC, Clemson ExtensionĮastern poison ivy ( Toxicodendron radicans) is a woody, perennial vine or small shrub that can be found in fields, pastures, woodlands, farms and home landscapes. Eastern poison ivy foliage exhibiting smooth leaf margins.
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