Weeds of the San Luis Valley

List A: species in Colorado that are designated by the Commissioner for eradication.

List B: weed species are species for which the Commissioner, in consultation with the state noxious weed advisory committee, local governments, and other interested parties, develops and implements state noxious weed management plans designed to stop the continued spread of these species.


Resources used:

Montana University Extension: http://store.msuextension.org/publications/AgandNaturalResources/MT201005AG.pdf

DiTomaso, J.M., G.B Kyser at al. 2013. Weed Control in Natural Areas in the Western United States. Weed Research and Information Center, University of California.

Colorado State University: http://extension.colostate.edu/topic-areas/agriculture/noxious-weeds-invasive-plant-species/

Colorado Department of Agriculture: https://www.colorado.gov/pacific/agconservation/canada-thistle

Whitson, T. (2006) Weeds of the west. Jackson, WY: Grande Teton Lithography

Merrill A. Ross : https://www.btny.purdue.edu/Pubs/WS/CanadaThistle/CanadaThistle.html