University of Georgia. Center for Invasive Species and Ecosystem Health.
Provides state, county, point and GIS data. Maps can be downloaded and shared.
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.
See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants
Missouri Department of Conservation.
See also: Invasive and Problem Plant Control (scroll to Invasive Plants section) for more information to help you identify and control most common invasive plants in Missouri
USDA. FS. Rocky Mountain Research Station. Fire Sciences Laboratory.
Maryland Department of Natural Resources. Forest Service.
See also: Invasive Plants and Insects Fact Sheets for additional species to help control invasive species in Maryland
IUCN. Species Survival Commission. Invasive Species Specialist Group.
Google.
Pennsylvania State University. Cooperative Extension.
Columbia University. Center for Environmental Research and Conservation.
University of Georgia. Center for Invasive Species and Ecosystem Health.
University of Pennsylvania. The Pennsylvania Flora Project of Morris Arboretum.
See also: Invasive Plant Fact Sheets for additional invasive plants in Pennsylvania
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Ohio Invasive Plants Council.
See also: Invasive Plants of Ohio for worst invasive plant species identified in Ohio's natural areas
CAB International.
North Carolina Department of Agriculture and Consumer Services. Forest Service.
See also: Forest Health Publications for more Invasive Species Leaflets
University of Georgia. Center for Invasive Species and Ecosystem Health.
King County Department of Natural Resources (Washington). Water and Land Resources Division.
Wisconsin Department of Natural Resources.
Iowa State University. Extension and Outreach.
Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab.