Resources
- Fact Sheet - Pennsylvania Dept. of Conservation and Natural Resources
- Biological Control of Invasive Plants in the Eastern United States - USDA Forest Service
- Weeds Gone Wild: Alien Plant Invaders of Natural Areas - Plant Conservation Alliance
- Element Stewardship Abstract - The Nature Conservancy
- Invasive Plant Atlas of New England - University of Connecticut
- Fire Effects Information System - USDA Forest Service
- Federal Noxious Weed Disseminules of the U.S. - USDA-APHIS
- Weed of the Week - USDA Forest Service
- Weed Field Guide - USDA Forest Service
- Plant Invaders of Mid-Atlantic Natural Areas - National Park Service and U.S. Fish and Wildlife Service
Representative Images
1459761 Canada thistle Cirsium arvense Flower(s) Steve Dewey |
1358360 Canada thistle Cirsium arvense Flower(s) Mary Ellen (Mel) Harte |
1459758 Canada thistle Cirsium arvense Flower(s) Steve Dewey |
5270081 Canada thistle Cirsium arvense Foliage Leslie J. Mehrhoff |
1358355 Canada thistle Cirsium arvense Foliage Mary Ellen (Mel) Harte |
1196009 Canada thistle Cirsium arvense Infestation UAF Cooperative Extension Archive |
1196013 Canada thistle Cirsium arvense Flower(s) Michael Shephard |
1196252 Canada thistle Cirsium arvense Plant(s) UAF Cooperative Extension Archive |
1237095 Canada thistle Cirsium arvense Plant(s) Dan Tenaglia |
1265114 Canada thistle Cirsium arvense Plant(s) Peggy Greb |
1334022 Canada thistle Cirsium arvense Flower(s) Chris Evans |
1358350 Canada thistle Cirsium arvense Plant(s) Mary Ellen (Mel) Harte |
1358358 Canada thistle Cirsium arvense Plant(s) Mary Ellen (Mel) Harte |
1459754 Canada thistle Cirsium arvense Infestation Steve Dewey |
1929056 Canada thistle Cirsium arvense Infestation Alec McClay |
5307004 Canada thistle Cirsium arvense Plant(s) USDA PLANTS Database |
5307006 Canada thistle Cirsium arvense Plant(s) USDA PLANTS Database |
Maps
EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
Alternative content
State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org
Alternative content
Most Troublesome / Most Common Agricultural Weed List
This map identifies those states that consider this species either most troublesome or most common in at least one commodity. For more information, visit the MTMC project page.
Alternative content
| Legend | |
| No Data for this state | |
| Troublesome or Common weed in one or more crops | |
Invasive Listing Sources
- Alabama Invasive Plant Council
- Alaska Noxious Weeds
- Arizona Noxious Weeds
- California Invasive Plant Council
- California Noxious Weeds
- City of Ann Arbor Michigan Parks and Recreation
- Colorado Noxious Weeds
- Commonwealth of Pennsylvania, Department of Conservation and Natural Resources, 1994.
- Connecticut Invasive Plant List
- Connecticut Invasive Plant Working Group
- Delaware Natural Resources and Environmental Control, 2004
- Delaware Noxious Weeds
- Faith Campbell, 1998
- Forest Service-Alaska, 2004
- Hoffman, R. & K. Kearns, Eds. 1997. Wisconsin manual of control recommendations for ecologically invasive plants. Wisconsin Dept. Natural Resources, Bureau of Endangered Resources. Madison, Wisconsin. 102pp.
- Idaho Noxious Weeds
- Illinois Invasive Plant List
- Illinois Noxious Weeds
- Indiana Native Plant and Wildflower Society
- Indiana Noxious Weeds
- Iowa Noxious Weeds
- Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
- John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
- Kansas Noxious Weeds
- Kentucky Exotic Pest Plant Council - Significant Threat
- Kentucky Noxious Weeds
- Maryland Cooperative Extension Service. 2003. Invasive Plant Control in Maryland. Home and Garden Information Center, Home and Garden Mimeo HG88. 4 pp.
- Maryland Department of Natural Resources, 1994
- Maryland Noxious Weeds
- Michigan Noxious Weeds
- Mid-Atlantic Exotic Pest Plant Council, 2005
- Minnesota Noxious Weeds
- Missouri Department of Conservation,
- Missouri Noxious Weeds
- Montana Noxious Weeds
- National Wildlife Refuge Association, Silent Invasion: A Call to Action from the National Wildlife Refuge Association, 2002. Washington DC. 17 pp.
- Native Plant Society of Oregon, 2008
- Nebraska Noxious Weeds
- Nevada Noxious Weeds
- New Hampshire Restricted Invasive Species
- New Jersey Department of Agriculture, Division of Plant Industry, 2004
- New Mexico Noxious Weeds
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- North Carolina Noxious Weeds - Class B
- North Dakota Noxious Weeds
- Ohio Noxious Weeds
- Oklahoma Noxious Weeds
- Oregon Noxious Weeds
- Pacific Northwest Exotic Pest Plant Council, 1998
- Pennsylvania Noxious Weeds
- Rhode Island Natural History Society,
- South Dakota Noxious Weeds
- Tennessee Exotic Pest Plant Council - Significant Threat
- Utah Noxious Weeds
- Virginia Department of Conservation and Recreation, 2009
- Washington Noxious Weeds
- WeedUS - Database of Plants Invading Natural Areas in the United States
- Wisconsin Noxious Weeds
- Wisconsin's Invasive Species Identification, Classification and Control Rule
- Wyoming Noxious Weeds
Taxonomic Rank
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Asteridae |
| Order: Asterales |
| Family: Asteraceae |
| Genus: Cirsium |
Other System Links
Plants: CIAR4Bayer: CIRAR
GRIN: 100755
ITIS: 36335
NPDN Pest: PBFAWBB
NPDN Host: 31702
Synonyms and Other Names
Other Common Names:
Californian thistle, creeping thistle, field thistle
Related Scientific Names:
| Breea arvensis (L.) Scop. | (Synonym) |
| Breea incana (L.) Scop. | (Synonym) |
| Carduus arvensis (L.) Scop. | (Synonym) |
| Cirsium incanum (L.) Scop. | (Synonym) |
| Cirsium setosum (L.) Scop. | (Synonym) |
| Serratula arvensis (L.) Scop. | (Synonym) |
| Common Name Reference: | USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA. |
| Scientific Name Reference: | USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA. |
Forestry Images is a joint project of the Center for Invasive Species and Ecosystem Health, USDA Forest Service and International Society of Arboriculture. |
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Last updated on Tuesday, May 04, 2010 at 02:41 PM