Johnsongrass

Scientific name: Sorghum halepense (L.) Pers.

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

Native To: Mediterranean Region

Date of U.S. Introduction: 1830

Images: Invasive.org and Google

Means of Introduction: Introduced for forage

Impact: Crowds out native species

Current U.S. Distribution:

• PLANTS Database map (see complete PLANTS Profile for county distribution and native status)
• Early Detection & Distribution Mapping System

U.S. States and U.S. National Parks Where Reported Invasive: WeedUS Database map

Management Plans: Plants

Selected Internet Resources:

• Federal Government
• State Government
• University/Academic
• International
• Organizations

Sorghum halepense
Integrated Taxonomic Information System.
Taxonomy

Sorghum halepense (L.) Pers. (Johnson Grass) - Noxious and Nuisance Plant Management Information System (PMIS)
United States Army Corps of Engineers. Engineer Research and Development Center. Environmental Laboratory.
Identification/Description; Photographs; Introduction History; Impacts; Distribution

Sorghum halepense Article Citation Search - AGRICOLA Database
USDA. National Agricultural Library.
Research; Special Note: NAL Catalog Search (resources)

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

Johnsongrass - Weed of the Week (Feb 21, 2006; PDF | 70 KB)
USDA. FS. Northeastern Area. Forest Health Protection. Identification/Description; Photographs; Introduction History; Impacts; Habitat; Distribution; Controls

Sorghum halepense - Fire Effects Information System (FEIS)
USDA. Forest Service. Rocky Mountain Research Station. Fire Sciences Laboratory.
Taxonomy; Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Habitat; Distribution; Controls; Special Note: References

Plant profile for Sorghum halepense - PLANTS Database
USDA. NRCS. National Plant Data Center.
Taxonomy; Identification/Description; Photographs; Distribution; Legal Aspects

Sorghum halepense - Invasive Species of the Central Southwest/Gulf Coast Region
DOI. National Biological Information Infrastructure.
Taxonomy; Special Note: References

Johnsongrass
Arizona Department of Transportation. Intermodal Transportation Division.
Identification/Description; Photographs; Life Cycle; Habitat; Controls; Legal Aspects

Sorghum genus - Encyloweedia
California Department of Food and Agriculture.
Identification/Description; Photographs; Habitat; Distribution; Dispersion; Controls

Johnsongrass - Idaho's Noxious Weeds
Idaho Association of Soil Conservation Districts. Idaho OnePlan.
Identification/Description; Introduction History; Distribution; Controls

Johnsongrass - Vegetation Management Manual
Illinois Nature Preserves Commission.
Identification/Description; Photographs; Introduction History; Life Cycle; Habitat; Dispersion; Controls

Johnsongrass Official Control Program
Kansas Department of Agriculture. Plant Protection and Weed Control Program.
Identification/Description; Controls

Johnson Grass - Missouri Vegetation Management Manual
Missouri Department of Conservation.
Identification/Description; Illustrations; Impacts; Life Cycle; Habitat; Distribution; Controls

Johnson Grass - Invasive Alien Plant Species of Virginia (PDF | 93 KB)
Virginia Department of Conservation and Recreation. Natural Heritage Program; Virginia Native Plant Society.
Identification/Description; Illustrations; Habitat; Controls

Johnsongrass
Washington State Noxious Weed Control Board.
Identification/Description; Habitat; Distribution; History; Photograph; Controls

Sorghum halepense - Wisconsin Botanical Information System
Wisconsin State Herbarium; University of Wisconsin-Madison.
Taxonomy; Photographs; Habitat; Distribution

Johnsongrass - WeedUS Database
University of Georgia. Center for Invasive Species and Ecosystem Health.
Taxonomy; Identification/Description; Photographs; Introduction History; Distribution

Johnsongrass Control (Dec 1997)
University of Missouri. Extension.
Identification/Description; Photographs; Life Cycle; Controls

Johnsongass Wanted Poster--Dead, Not Alive! (PDF | 167 KB)
University of Nevada - Reno. Cooperative Extension.
Identification/Description; Photographs

Managing Johnsongrass (PDF | 318 KB)
University of Nevada - Reno. Cooperative Extension.
Identification/Description; Photographs; Impacts; Habitat; Dispersion; Controls

Johnsongrass - Ohio Perennial & Biennial Weed Guide
Ohio State University. Ohio Agricultural Research and Development Center.
Identification/Description; Photographs; Introduction History; Impacts; Life Cycle

Johnsongrass and Shattercane Control: An Integrated Approach (PDF | 94 KB)
Pennsylvania State University. Cooperative Extension.
Identification/Description; Illustrations; Dispersion; Controls

Johnsongrass - Toxic Plant Database
Texas A&M University System. Texas Cooperative Extension.
Identification/Description; Photographs; Impacts; Controls

Johnsongrass - Virginia Tech Weed Identification Guide
Virginia Polytechnic Institute and State University. Plant Pathology, Physiology, and Weed Science.
Identification/Description; Photographs

Sorghum halepense - Grassland Index
UN. Food and Agriculture Organization.
Identification/Description; Life Cycle; Habitat; Distribution

Sorghum halepense (grass) - ISSG Global Invasive Species Database
World Conservation Union. Invasive Species Specialist Group.
Taxonomy; Identification/Description; Impacts; Life Cycle; Habitat; Distribution; Controls

Johnson Grass - Plant Pest Control (PDF | 103 KB)
Hawke's Bay Regional Council (New Zealand).
Identification/Description; Photographs; Impacts; Controls

Sorghum halepense
Discover Life.
Identification/Description; Photographs; Introduction History; Impacts; Habitat; Distribution; Dispersion; Controls

Johnson Grass - BioBullies (PDF | 775 KB) (Western Pennsylvania)
Natural Biodiversity.
Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Habitat; Controls

Sorghum halepense (Johnsongrass)
Nature Conservancy. Global Invasive Species Initiative.
Identification/Description; Photographs; Introduction History; Impacts; Dispersion; Controls; Special Note: Element Stewardship Abstract with excellent set of references

Sorghum halepense
Pacific Island Ecosystems at Risk.
Identification/Description; Impacts; Life Cycle; Habitat; Distribution; Controls

Sorghum halepense
Pulling Together Initiative. Texasinvasives.org.
Taxonomy; Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Habitat; Distribution; Dispersion; Controls; Special Note: References