Cirsium arvense - Asteraceae Family - Creeping perennial
Prevention (Prev) Monitor and destroy new plants before seed production.
Mechanical (Mech) Hand pulling, digging, cutting, mowing and tilling.
Cultural (Cult) Biological control agents, livestock grazing, and revegetation practices.
Chemical (Chem) Selective herbicides based on the plant and the specific location. Check our weed fact sheets for specific control information.
Canada thistle plant
Canada thistle stem and foliage
Canada thistle flowers
Seedling (or young rosette) of Canada thistle
Canada thistle infestation
Canada thistle plants going to seed
Canada thistle plant in Spruces Campground, Big Cottonwood Canyon
Canada thistle inflorescence
(2013, November). Canada Thistle.
Retrieved from http://extension.colostate.edu/topic-areas/natural-resources/canada-thistle-3-108/
of Agriculture. (2015, July). Canada
thistle identification and management [PDF file]. Retrieved from https://www.colorado.gov/pacific/agconservation/canada-thistle
Weed Management Association. Canada
thistle. Retrieved from https://cwma.org/weed-information/weed-list/canada-thistle/
(2018, February 28). Canada thistle management
with herbicides. Retrieved from https://www.techlinenews.com/articles/2012/02/16/canada-thistle-management-with-herbicides
Johnson, J., & Sellmer, J. (2007) Managing
Canada thistle [PDF file]. Retrieved from https://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_018027.pdf