About Poison ivy, www.poison-ivy.org

This is the internet's only complete, authoritative source of information about Poison ivy, Pacific poison oak, Poison sumac, and all the issues that surround them.

poison ivy, oak, sumac

This website is the result of 60 years of gathering information about poison ivy, poison oak, and poison sumac, combined with 20 years of extensive work to build the most informative website possible about all aspects of these difficult plants. Jon Sachs is the creator of the site and brings decades of experience in web design, photography skills, and poison ivy savvy to bear. You can learn more about Jon at his Jon Sachs Collected Website.

poison ivy, oak, sumac

Photographs on this site come from our field trips in Massachusetts, New York, New Jersey, North Carolina, Texas, Colorado, California, Florida, Kentucky, Maine, Vermont, Connecticut, Rhode Island, Washington, Ohio, Pennsylvania, Virginia and southern Canada. In spring, summer and fall you can read our original weekly original blog post.

poison ivy, oak, sumac

We have read all of the many books about poison ivy, conferred with various scientists who do research about the plants, talked at length with dermatologists, and visited many parts of the United States and Canada to gather images of the plants.

Our galleries include every sort of poison ivy, oak, and sumac plant, from ground vines to climbing vines to shrubs. We have images in all seasons and all stages of growth.