State Government
Cirsium genus - EncycloWeedia
California Department of Food and Agriculture.
Identification/Description; Photographs; Habitat; Distribution; Dispersion; Controls
Canada Thistle - Best Management Practices Weed Profile (PDF | 217 KB)
Colorado State Parks.
Identification/Description; Illustrations; Introduction History; Impacts; Habitat; Distribution; Controls; Special Note: References
Canada thistle - Noxious Weed Information Series (PDF | 274 KB)
State of Colorado. Jefferson County. Weed and Pest Management Program.
Identification/Description; Photographs; Habitat; Controls
Canada Thistle
State of Colorado. Larimer County. Weed Control District.
Identification/Description; Photographs; Controls
Canada Thistle - Idaho's Noxious Weeds
Idaho Association of Soil Conservation Districts. Idaho OnePlan.
Identification/Description; Photographs; Introduction History; Distribution; Controls
Canada Thistle - Vegetation Management Guideline
Illinois Nature Preserves Commission.
Identification-Description; Photographs; Impacts; Life cycle; Distribution; Controls
Canada Thistle Official Control Program
Kansas Department of Agriculture. Plant Protection and Weed Control Program.
Identification/Description; Dispersion; Controls
Canada Thistle - Missouri Vegetation Management Manual
Missouri Department of Conservation.
Identification/Description; Illustrations; Impacts; Life Cycle; Habitat; Distribution; Controls
Canada Thistle - Invasive Plants of Ohio
Ohio Department of Natural Resources. Natural Areas and Preserves.
Identification/Description; Photographs; Introduction History; Impacts; Habitat; Distribution; Controls
Canada Thistle - Invasive Alien Plant Species of Virginia (PDF | 98 KB)
Virginia Department of Conservation and Recreation. Natural Heritage Program and Virginia Native Plant Society.
Identification/Description; Illustrations; Impacts; Life Cycle; Habitat; Distribution; Controls
Canada Thistle (Cirsium arvense L.)
Washington State Noxious Weed Control Board.
Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Habitat; Distribution; Controls; Special Note: References
Canada Thistle
Wisconsin Department of Natural Resources.
Identification/Distribution; Photographs; Introduction History; Impacts; Habitat; Distribution; Control
Canada Thistle - Wisconsin Botanical Information System
Wisconsin State Herbarium; University of Wisconsin-Madison.
Taxonomy; Photographs; Habitat; Distribution |