Federal Noxious Weed Disseminules of the U.S. - Fact Sheet:
USDA. APHIS. PPQ. Center for Plant Health Science and Technology; California Department of Food and Agriculture.
Pacific Island Ecosystems at Risk (PIER) - Sorghum halepense
Institute of Pacific Islands Forestry.
Invasive Plant Atlas of the United States - Johnsongrass
University of Georgia. Center for Invasive
Species and Ecosystem Health.
Texas Invasives Database - Sorghum halepense
The Quiet Invasion: A Guide to Invasive Species of the Galveston Bay Area -
Texas Commission on Environmental Quality, Galveston Bay Estuary Program; Houston Advanced Research Center (HARC).
Invasive Species Compendium - Sorghum halepense
Global Invasive Species Database - Sorghum halepense (grass)
IUCN. Species Survival Commission. Invasive Species Specialist Group.
U.S. National Plant Germplasm System - Sorghum halepense
USDA. ARS. National Genetic Resources Program. GRIN-Global.
Fire Effects Information System (FEIS) - Sorghum halepense
USDA. FS. Rocky Mountain Research Station. Fire Sciences Laboratory.
PLANTS Database - Johnsongrass
National Plant Data Center.
Weeds in Australia -
Johnson Grass (Sorghum halepense)
Australian Government. Department of the Environment and Energy.
Encycloweedia: Data Sheet - Sorghum genus
California Department of Food and Agriculture.
Included on California's noxious weed list; see Encycloweedia: Program Details for additional resources.
Noxious Weed Species - Johnsongrass
Colorado Department of Agriculture. Conservation Services Division. Noxious Weed Program.
Field Guide: Invasive - Johnson
Missouri Department of Conservation.
See also: Problem Plant Control (scroll to Invasive Plants section) for more information to help you identify and control most common invasive plants in Missouri
Sorghum halepense - Invasive Species Leaflet No. 12 (Mar 2010; PDF | 197 KB)
North Carolina Department of Agriculture and Consumer Services. North Carolina Forest Service.
Invasive Plants in Pennsylvania: Johnsongrass (PDF | 589 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plants fact sheets (scroll to view) for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands.
A Noxious Weed: Johnsongrass
Washington State Noxious Weed Control Board.
Johnsongrass (Sorghum halepense)
Wisconsin Department of Natural Resources.
Weed Control in Natural Areas in the Western United States: Johnsongrass (2013; PDF | 261 KB)
University of California. Weed Research and Information Center.
Johnsongrass Control in Cropland (PDF | 257 KB)
University of Delaware. Cooperative Extension.
Invasive Plant Atlas of the MidSouth - Johnsongrass
Mississippi State University. GeoResources
Invasive, Exotic Plants of the Southeast - Johnsongrass
North Carolina State University. Cooperative Extension. Going Native: Urban Landscaping for Wildlife with Native Plants.
Ohio Perennial & Biennial Weed Guide - Johnsongrass
Ohio State University. Ohio Agricultural Research and Development Center.
Johnsongrass and Shattercane Control: An Integrated Approach
Pennsylvania State University. Cooperative Extension.
BioBullies - Johnson
Grass (PDF | 775 KB)
Natural Biodiversity (Western Pennsylvania).
See also: Invasive Species Fact Sheets for the worst trouble-makers in the region, and also for additional trouble-makers for you to watch out for.