POISONOUS PLANTS
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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
Western poison ivy (left); Eastern poison ivy (right): Maps courtesy of U.S. Department of Agriculture
Across the United States, except California, Alaska, and Hawaii
Poison Oak
Pacific poison oak (left); Atlantic poison oak (right): Maps courtesy of U.S. Department of Agriculture
Primarily the Southeast and West Coast
Poison Sumac
Map courtesy of U.S. Department of Agriculture
Abundant along the Mississippi River and boggy areas of the Southeast
- Page last reviewed: July 7, 2016
- Page last updated: July 7, 2016
- Content source:
- National Institute for Occupational Safety and Health Education and Information Division