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You are here: Home / Plants / Species Profiles / Johnsongrass
Species Profiles


JohnsongrassScientific name: Sorghum halepense (L.) Pers. (ITIS)

Common names: Johnsongrass, Johnson grass, Aleppo grass, Aleppo milletgrass

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Selected Resources

Native To: Mediterranean Region (Howard 2004)

Date of U.S. Introduction: Early 1800s (Warwick and Black 1983)

Means of Introduction: Introduced for forage (Howard 2004)

Impact: Agricultural weed that can cause serious economic losses (Howard 2004)

Current U.S. Distribution:


Selected Resources:

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Federal Noxious Weed Disseminules of the U.S. - Fact Sheet:
Sorghum halepense

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

Pacific Island Ecosystems at Risk (PIER) - Sorghum halepense
USDA. FS. 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

Invasive Species Compendium - Sorghum halepense
CAB International.

Global Invasive Species Database - Sorghum halepense (grass)
World Conservation Union. Invasive Species Specialist Group.


Germplasm Resources Information Network (GRIN) - Sorghum halepense
USDA. ARS. National Genetic Resources Program.

Fire Effects Information System (FEIS) - Sorghum halepense
USDA. FS. Rocky Mountain Research Station. Fire Sciences Laboratory.

PLANTS Database - Johnsongrass
USDA. NRCS. National Plant Data Center.


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.

Johnsongrass (Aug 2009; PDF | 1.28 MB)
Colorado Department of Agriculture. Conservation Services Division.

Johnsongrass - Vegetation Management Manual
Illinois Nature Preserves Commission.

Johnson Grass
Missouri Department of Conservation.

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.

Class 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 Institute.

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.

Pennsylvania State University. Cooperative Extension.


BioBullies - Johnson Grass (PDF | 775 KB)
Natural Biodiversity (Western Pennsylvania).


Integrated Taxonomic Information System. Sorghum halepense. [Accessed Sep 10, 2014].

Howard, J.L. 2004. Sorghum halepense. In: Fire Effects Information System. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.

Warwick, S.I. and L.D. Black. 1983. The biology of Canadian weeds. 61. Sorghum halepense (L.) PERS. Canadian Journal of Plant Science 63:997-1014.

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Last Modified: Nov 18, 2015
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