The Bugwood Network
bull thistle
Magnoliopsida > Asterales > Asteraceae > Cirsium vulgare (Savi) Ten.
Synonym(s): common thistle, spear thistle

Identification, Biology, Control and Management Resources
Biological Control of Invasive Plants in the Eastern United States - USDA Forest Service

Selected Images from
Description:Close-up of flower
Photographer:Loke T. Kok, Virginia Polytechnic Institute and State University
Resolutions:768x512 - PowerPoint/Web
1536x1024 - Print
Photographer:Britt Slattery, U.S. Fish and Wildlife Service
Resolutions:768x512 - PowerPoint/Web
Description:Large mature plant at timber harvest area
Photographer:Dave Powell, USDA Forest Service
Resolutions:768x512 - PowerPoint/Web
1536x1024 - Print
Photographer:Dan Tenaglia,
Resolutions:768x512 - PowerPoint/Web
Photographer:Dan Tenaglia,
Resolutions:768x512 - PowerPoint/Web
Description:Distribution Map
Source:USDA NRCS, The PLANTS Database, September, 2003

Invasive and Noxious Weed References

  • Invasive Exotic Plant Species of Management Concern, USDA Forest Service, Southern Region, May 18, 2001 -
  • Arkansas State Plant Board, Regulations on Plant Diseases and Pests, September 1997 -
  • Annotated Code of Maryland. 1994. Weed Control. State of Maryland.
  • Pennsylvania Department of Agriculture. 1997. Summary of Plant Protection Regulations. Pennsylvania Department of Agriculture.
  • Tennessee Exotic Pest Plant Council. Invasive Exotic Pest Plants in Tennessee. May 2001.
  • Invasive Alien Plant Species of Virginia -
Taxonomic Reference
USDA, NRCS. 2002. The PLANTS Database, Version 3.5 ( National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

USDA Forest ServiceUSDA APHIS PPQThe Bugwood Network University of Georgia Bargeron, C.T., D.J. Moorhead, G.K. Douce, R.C. Reardon & A.E. Miller
(Tech. Coordinators). 2003. Invasive Plants of the Eastern U.S.:
Identification and Control. USDA Forest Service - Forest Health
Technology Enterprise Team. Morgantown, WV USA. FHTET-2003-08.