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Scientific Name:
Onopordum acanthium L. (ITIS)
Common Name:
Scotch thistle, cotton thistle, heraldic thistle, woolly thistle
Native To:
Eurasia (Briese et al. 2003)
Date of U.S. Introduction:
1800s (Schuster and Prather 2003)
Means of Introduction:
Ornamental (Schuster and Prather 2003)
Impact:
Crowds out desirable forage (Schuster and Prather 2003)
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.
Images
University of Georgia. Center for Invasive Species and Ecosystem Health.
Videos
Google. YouTube; University of Arizona. Coconino County Cooperative Extension.
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 Scotch Thistle.
Council or Task Force
Washington State Recreation and Conservation Office. Washington Invasive Species Council.
Partnership
IUCN. Species Survival Commission. Invasive Species Specialist Group.
University of Georgia. Center for Invasive Species and Ecosystem Health.
Centre for Invasive Species Solutions; Atlas of Living Australia; Australian Government. Department of Agriculture, Water and the Environment.
Federal Government
USDA. ARS. National Genetic Resources Program. GRIN-Global.
International Government
Victoria Department of Jobs, Precincts and Regions (Australia). Agriculture.
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
Colorado Department of Agriculture. Conservation Services Division. Noxious Weed Program.
Academic
University of California. Weed Research and Information Center.
See also: Weeds in Natural Areas for more information sheets
University of Idaho; Oregon State University; Washington State University. Pacific Northwest Extension.
Professional
Citations
- Briese, D.T., S. Bottcher, J. Vitou, and T. Thomann. 2003. Prevalence and impact of the crown fly, Botanophila spinosa, on its host thistle, Onopordum acanthium, in southern France. Acta Oecologica 24(2):77-86.
- Integrated Taxonomic Information System. Onopordum acanthium. [Accessed Sep 10, 2014].
- Schuster, M., and T.S. Prather. 2003. Scotch thistle Pacific Northwest Extension Publication PNW 569.