Johnsongrass

USDA. APHIS. PPQ. Center for Plant Health Science and Technology; California Department of Food and Agriculture.

IUCN. Species Survival Commission. Invasive Species Specialist Group.

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

CAB International.

USDA. FS. Institute of Pacific Islands Forestry.

USDA. Forest Service; Southern Regional Extension Forestry. Forest Health Program.

United Soybean Board.

TexasInvasives.org.

Texas Commission on Environmental Quality, Galveston Bay Estuary Program; Houston Advanced Research Center (HARC).

Centre for Invasive Species Solutions; Atlas of Living Australia; Australian Government. Department of Agriculture, Water and the Environment.

USDA. FS. Rocky Mountain Research Station. Fire Sciences Laboratory.

USDA. NRCS. National Plant Data Center.

USDA. ARS. National Genetic Resources Program. GRIN-Global.

Australian Centre for International Agricultural Research. PestNet.

North Carolina Department of Agriculture and Consumer Services. Forest Service.

Washington State Noxious Weed Control Board.

California Department of Food and Agriculture.

Missouri Department of Conservation.

Pennsylvania Department of Conservation and Natural Resources.

Wisconsin Department of Natural Resources.

Colorado Department of Agriculture. Conservation Services Division. Noxious Weed Program.

University of Florida. Institute of Food and Agricultural Sciences Extension.

University of Delaware. Cooperative Extension.

Mississippi State University. Extension.

University of California. Agriculture and Natural Resources.

Ohio State University. Ohio Agricultural Research and Development Center.