Cirsium arvense (L.) Scop (ITIS)
Canada thistle, Californian thistle, Canadian thistle, creeping thistle, field thistle, corn thistle, perennial thistle, field thistle
Europe (Nuzzo 1997)
1600s (Nuzzo 1997)
Possibly accidental through farm seed shipments
Crowds out native species (Stachion and Zimdahl 1980); reduces crop and forage yields (Moore 1975)
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Distribution / Maps / Survey Status
The section below contains highly relevant resources for this species, organized by source.
Council or Task Force
State and Local Government
Integrated Taxonomic Information System.Cirsium arvense. [Accessed Apr 6, 2023].
Moore, R.J. 1975. The biology of Canadian weeds: 13. Cirsium arvense (L.) Scop. Canadian Journal of Plant Science 55(4):1033-1048.
Nuzzo, V. 1997. Element Stewardship Abstract for Cirsium arvense [PDF, 131 KB]. Arlington, Va.: Nature Conservancy.
Stachion, W.J. and R.L. Zimdahl. 1980. Allelopathic activity of Canada thistle (Cirsium arvense) in Colorado. Weed Science 28:83-86.