Scotch Thistle

Onopordum acanthium

Scotch thistle is a state designated noxious weed in Wyoming.

Onopordium acanthium

Photo by Steve Dewey, Utah State University, Bugwood.org

                         Estimated       Overall
                       Acres Maps  Trends Maps
                          2013              2013
                          2010              2010
                          2007              2007
                          2005              2005
                          2003              2003

Explanation of Maps

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