Eastern poison ivy is mostly located in the eastern parts of the United States and Canada.

It develops in May through June.

It spreads either sexually or vegetatively.

Urushiol is the substance in poison ivy that causes irritation.

Some people have an allergic reaction to poison ivy which can lead to very painful blisters.

In order to identify poison ivy you can follow the saying "leaves of three, let it be".

Facts

Eastern Poison Ivy