University of Maryland Extension

Poison Ivy

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Home and Garden Information Center
Poison ivy growing up tree

Have you seen this?

Identify Poison Ivy! 

This is poison ivy (Toxicodendron radicans). It can grow as a vine, but it also can appear in a leafy or shrubby form in woodlands, fields, and home landscapes. Its appearance can vary depending on the age of the plant and the conditions in which it's growing.

Poison ivy is a native plant and its berries provide a valuable food source for birds, which aid in the spread of its seeds. This is often how we find new poison ivy popping up in our gardens!

Many people see the "leaves of three" and the "oak-like" shape of the leaves and express concern about poison oak. Atlantic poison oak (Toxicodendron pubescens) is a low growing relative, but is less commonly encountered.

Learn more about poison ivy and take the poison ivy quiz to see if you can recognize its look-a-likes.

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