POISONOUS PLANTS

Geographic Distribution

One or more of the most common poisonous plant species are found throughout the United States (except Alaska and Hawaii). These plants can be found in forests, fields, wetlands and along streams, road sides, and even in urban environments, such as, parks and backyards.

Poison Ivy

Maps courtesy of U.S. Department of Agriculture

Western poison ivyExternal (left); Eastern poison ivyExternal (right):
Maps courtesy of U.S. Department of Agriculture

Poison Oak

 Map of location of Poison Oak

Pacific poison oakExternal (left); Atlantic poison oakExternal (right):
Maps courtesy of U.S. Department of Agriculture

Poison Sumac

Map of location of Poison Sumac

Poison SumacExternal
Maps courtesy of U.S. Department of Agriculture

Page last reviewed: June 1, 2018