Aggressive Native Plants Trees
Big-toothed aspen (Populus grandidentata)
Boxelder (Acer negundo) Kitty Kohout Gary Fewless
Eastern cottonwood (Populus deltoides) Derek Anderson
Eastern red-cedar (Juniperus virginiana) Howard F. Schwartz, Colorado State University, Bugwood.org Keith Kanoti, Maine Forest Service, Bugwood.org
Honey locust (Gleditsia triacanthos)
Quaking aspen (Populus tremuloides) Christopher NollDerek Anderson Kenneth Sytsma
Aggressive Native Plants Shrubs
Gray dogwood (Cornus racemosa) Merel Black Paul Drobot Merel Black
Prickly ash (Zanthoxylum americanum) Christopher Noll
Red osier dogwood (Cornus stolinifera) Courtney LeClair
Smooth sumac (Rhus glabra) Kenneth Sytsma Merel Black
Staghorn sumac (Rhus hirta) Robert Bierman
Aggressive Native Plants Vines
Ground nut (Apios americana) Christopher Noll Merel Black
Poison ivy (Toxicodendron radicans) Christopher Noll Robert W. Freckmann
Aggressive Native Plants Forbs
Bracken fern (Pteridium aquilinum) Matthew Wagner
Canada goldenrod (Solidago canadensis) Christopher Noll Joshua Nemec Merel Black
Common ragweed (Ambrosia artemisiifolia) Ohio State Weed Lab Archive, The Ohio State University, Bugwood.org Steve Dewey, Utah State University, Bugwood.org Merel Black Paul Drobot
Giant ragweed (Ambrosia trifida) Chris Evans, River to River CWMA, Bugwood.org Paul Drobot Theodore Webster, USDA Agricultural Research Service, Bugwood.org
Heal-all (Prunella vulgaris) Kenneth J. Sytsma
Stinging nettle (Urtica dioica) © J R Crellin 2004 Robert Vidéki, Doronicum Kft., Bugwood.org Richard Old, XID Services, Inc., Bugwood.org John Cardina, The Ohio State University, Bugwood.org
Virginia waterleaf (Hydrophyllum virginianum) Paul Drobot Merel Black
White snakeroot (Ageratina altissima) Merel Black
Wood nettle (Laportea canadensis) Christopher Noll