- Cirsium vulgare is an annual or biennial, herbaceous plant that invades disturbed areas throughout the United States. The spiny, spreading, winged stems are up to 7 ft. (2.1 m) tall.
- Leaves are 3-12 in. (7.6-30.5 cm) long, lance-shaped and very hairy.
- Flowers develop, at the apex of the plant, from June to September. The purple flower heads are 1.5-2 in. (3.8-5.1 cm) in diameter and 1-2 in. (2.5-5.1 cm) long with narrow, spine-tipped bracts.
- Fruits have several bristles on the tip and are up to 0.2 in. (5 mm) long.
- Ecological Threat
- Cirsium vulgare can invade almost any type of disturbed area, such as forest clearcuts, riparian areas and pastures. Plants can form dense thickets, displacing other vegetation. The spiny nature of the plant renders it unpalatable to wildlife and livestock and reduces the forage potential of pastures. Cirsium vulgare is native to Europe, western Asia, and northern Africa. It is thought to have been introduced to the eastern United States during colonial times and the western United States in the late 1800s. It is currently found in all 50 states.
- Biological Control of Invasive Plants in the Eastern United States - USDA Forest Service
- Fire Effects Information System - USDA Forest Service
- Weed of the Week - USDA Forest Service
- Weed Field Guide - USDA Forest Service
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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
State Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org
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.
|No Data for this state|
|Troublesome or Common weed in one or more crops|
Invasive Listing Sources
- Alabama Invasive Plant Council - Watch list A
- 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.
- Faith Campbell, 1998
- Forest Service-Alaska, 2004
- Georgia Exotic Pest Plant Council - Category 4
- Great Lakes Early Detection Network
- 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.
- Illinois Invasive Plant List
- 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.
- 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
- Native Plant Society of Oregon, 2008
- New Jersey Department of Agriculture, Division of Plant Industry, 2004
- New Mexico Noxious Weeds
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Oregon Noxious Weeds
- Pacific Northwest Exotic Pest Plant Council, 1998
- Pennsylvania Noxious Weeds
- Pennypack Ecological Restoration Trust, Pennsylvania.
- South Carolina Exotic Pest Plant Council - Watch B
- South Dakota Noxious Weeds
- Tennessee Exotic Pest Plant Council
- Virginia Invasive Plant Species List
- Washington Noxious Weeds
- WeedUS - Database of Plants Invading Natural Areas in the United States
Other System LinksPlants: CIVU
NPDN Pest: PBFAWBG
NPDN Host: 36348
|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.|