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