Japanese honeysuckle. Photo by: Charles T. Bryson, USDA Agricultural Research Service, Bugwood.org

Close-up of Japanese honeysuckle. Photo by: Dan Clark, USDI National Park Service, Bugwood.org

Japanese honeysuckle fruits and foliage. Photo by: Ted Bodner, Southern Weed Science Society, Bugwood.org

Trumpet creeper flowers. Photo by: Theodore Webster, USDA Agricultural Research Service, Bugwood.org

View of trumpet creeper foliage. Photo by: Dan Clark, USDI National Park Service, Bugwood.org

Trumpet creeper seeds. Photo by: Ken Chamberlain, The Ohio State University, Bugwood.org

Virginia creeper. Photo by: Theodore Webster, USDA Agricultural Research Service, Bugwood.org

Close-up of Virginia Creeper. Photo by: Ohio State Weed Lab Archive, The Ohio State University, Bugwood.org

Virginia creeper. Photo by: Ted Bodner, Southern Weed Science Society, Bugwood.org

Poison Ivy seedling. Photo by: Ohio State Weed Lab Archive, The Ohio State University, Bugwood.org

Flowering poison ivy. Photo by: Joseph LaForest, University of Georgia, Bugwood.org

Poison ivy. Photo by: Ohio State Weed Lab Archive, The Ohio State University, Bugwood.org

Poison ivy stem. Photo by: Ohio State Weed Lab Archive, The Ohio State University, Bugwood.org

Wild grape (muscardine). Photo by: Ted Bodner, Southern Weed Science Society, Bugwood.org

Close-up of wild grape (muscardine). Photo by: Ted Bodner, Southern Weed Science Society, Bugwood.org