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Witchweed

View all resources
Witchweed - Invasive.org
Witchweed, parasitic plants - Florida Department of Agriculture and Consumer Services
Scientific Name: 
Striga asiatica (L.) Kuntze (ITIS)
Synonym: 
Striga lutea Lour. (ITIS)
Common Name: 
Witchweed, Asiatic witchweed, red witchweed
Native To: 
Africa and Asia (Werth et al. 1984)
Date of U.S. Introduction: 
First identified in North Carolina in 1956 (Werth et al. 1984)
Means of Introduction: 
Accidental (Spallek et al. 2013)
Impact: 
Parasitic plant that attacks agricultural crops, including corn, sorghum, sugar cane, and rice (Werth et al. 1984)
Current U.S. Distribution: 
North Carolina, South Carolina

Spotlights

Cornell University. College of Agriculture and Life Sciences. Cornell Alliance for Science.

Farmers who grow cereal crops in most African countries are all too familiar with the challenges presented by striga, a parasitic plant also known as witchweed that infests farmers’ fields and causes lower yields, or even no harvest at all. Now African scientists are breeding maize that can resist this pest plant as extension agents are offering farmers various solutions for improving yields in areas where the invasive weed is especially prevalent.

Distribution / Maps / Survey Status

University of Georgia. Center for Invasive Species and Ecosystem Health.
Provides state, county, point and GIS data. Maps can be downloaded and shared.

Federally Regulated

U.S. Government Printing Office. Electronic Code of Federal Regulations.

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.

Images

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

Videos

Google. YouTube; Queensland Department of Agriculture and Fisheries (Australia). Biosecurity Queensland.

Selected Resources

The section below contains highly relevant resources for this species, organized by source. Or, to display all related content view all resources for Witchweed.

Partnership

Plant Health Australia.

See also: Grains - Fact Sheets for more resources

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.
East African Network for Taxonomy.
USDA. FS. Institute of Pacific Islands Forestry.

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

Federal Government
USDA. NRCS. National Plant Data Center.

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

International Government
New South Wales Department of Primary Industries (Australia).
State and Local Government
California Department of Food and Agriculture.
See also: Included on California's noxious weed list; see Encycloweedia: Program Details for additional resources
Academic
Virginia Polytechnic Institute and State University. Virginia Forest Landowner Education Program.
See also: Publications - Exotic Invasives for more fact sheets

Clemson University. Regulatory Services.

Citations