Poison Ivy | Overview

There are two types of poison ivy -- both have stems with three leaves.
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What is poison ivy?

Poison ivy is a very common plant found in most parts of the United States. It has 2 forms. One form grows low to the ground. It is usually found in groups of many plants and looks like weeds growing from 6 inches to 30 inches high. The other form is a "hairy" vine that grows up a tree. Both have stems with 3 leaves. You may have heard the old saying, "Leaflets three, let it be." This is because most people are allergic to poison ivy.

Written by familydoctor.org editorial staff

Reviewed/Updated: 04/14
Created: 06/05

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