Illustrated, easy-to-read fact sheets on invasive alien plants with native ranges, plant descriptions, ecological threats, U.S. distributions & habitats, background of introductions, plant reproduction & dispersal, management approaches, and alternative native plants:

http://www.nps.gov/plants/alien/factmain.htm

Invasive Plants of the Eastern United States: Identification and Control:

http://www.invasive.org/eastern/

Southeast Exotic Pest Plant Council:

http://www.se-eppc.org/

Invasive Species of Concern in Georgia:

http://www.gainvasives.org 

NC Noxious Weed List:

http://www.ncagr.gov/plantindustry/plant/weed/noxweed.htm

U.S. Fish & Wildlife Service, Invasive Species Web Site:

http://www.fws.gov/invasives/

Kentucky Division of Forestry:

http://www.forestry.ky.gov/programs/health/Invasive+-+Exotic+Plants.htm

Center for Aquatic and Invasive Plants:

http://plants.ifas.ufl.edu/