University of Georgia. Center for Invasive Species and Ecosystem Health.

Provides state, county, point and GIS data. Maps can be downloaded and shared.

University of Georgia. Center for Invasive Species and Ecosystem Health.

USDA. APHIS. Plant Protection and Quarantine.

Includes species listed as a Federal Noxious Weed under the Plant Protection Act, which makes it illegal in the U.S. to import or transport between states without a permit.

USDA. NRCS. National Plant Data Center.

USDA. APHIS. Plant Protection and Quarantine.

See also: National Environmental Policy Act (NEPA) Documents for more resources