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Canada thistle
Magnoliopsida > Asterales > Asteraceae > Cirsium arvense (L.) Scop.

Identification, Biology, Control and Management Resources
Plant Invaders of Mid-Atlantic Natural Areas - National Park Service and U.S. Fish and Wildlife Service
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
Fire Effects Information System - USDA Forest Service

Selected Images from www.invasive.org
 
Number:0024019
Description:Flowers
Photographer:Norman E. Rees, USDA ARS
Resolutions:768x512 - PowerPoint/Web
1536x1024 - Print
 
Number:1237095
Description:Plants
Photographer:Dan Tenaglia, www.missouriplants.com
Resolutions:768x512 - PowerPoint/Web
 
Number:1929056
Description:Infestation in canola field
Photographer:Alec McClay, Alberta Research Council
Resolutions:768x512 - PowerPoint/Web
1536x1024 - Print
 
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 - http://www.se-eppc.org/fslist.cfm
  • Invasive Plant Atlas of New England - http://invasives.eeb.uconn.edu/ipane/current_inv.htm
  • Arkansas State Plant Board, Regulations on Plant Diseases and Pests, September 1997 - http://www.plantboard.org/plant_pdfs/plantdiseasereg.pdf
  • Mehrhoff, L.J., K.J. Metzler, & E.E. Corrigan. 2003. Non-native and potentially invasive vascular plants in Connecticut. Center for Conservation and Biodiversity, University of Connecticut, Storrs. - http://www.hort.uconn.edu/cipwg/
  • Delaware Department of Agriculture. 1982. Rules and Regulations for Noxious Weed Control. Delaware Department of Agriculture. http://plants.usda.gov/cgi_bin/state_noxious.cgi?statefips=10
  • Bureau of Environmental Programs. 1994. Illinois Noxious Weed Law and Rules. Illinois Department of Agriculture. http://plants.usda.gov/cgi_bin/state_noxious.cgi?statefips=17
  • Annotated Code of Maryland. 1994. Weed Control. State of Maryland. http://plants.usda.gov/cgi_bin/state_noxious.cgi?statefips=24
  • Revised Statues of Missouri. 1992. Insect Pests and Weeds. Missouri Department of Agriculture. http://plants.usda.gov/cgi_bin/state_noxious.cgi?statefips=29
  • North Carolina Department of Agriculture, Plant Industry Division, Noxious Weed Regulations - http://www.ncagr.com/plantind/plant/weed/nxwdrg.htm
  • Ohio Department of Agriculture. 1997. Noxious Weeds. Ohio Department of Agriculture. http://plants.usda.gov/cgi_bin/state_noxious.cgi?statefips=39
  • Pennsylvania Department of Agriculture. 1997. Summary of Plant Protection Regulations. Pennsylvania Department of Agriculture. http://plants.usda.gov/cgi_bin/state_noxious.cgi?statefips=42
  • Tennessee Exotic Pest Plant Council. Invasive Exotic Pest Plants in Tennessee. May 2001.
    http://www.se-eppc.org/states/TN/TNIList.html
  • Invasive Alien Plant Species of Virginia - http://www.dcr.state.va.us/dnh/invlist.pdf
Taxonomic Reference
USDA, NRCS. 2002. The PLANTS Database, Version 3.5 (http://plants.usda.gov). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
http://plants.usda.gov/cgi_bin/topics.cgi?earl=plant_profile.cgi&symbol=CIAR4

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USDA Forest ServiceUSDA APHIS PPQ The Bugwood Network University of Georgia Invasive.org is a joint project of
The Bugwood Network, USDA Forest Service & USDA APHIS PPQ.
The University of Georgia - Warnell School of Forest Resources and
College of Agricultural and Environmental Sciences - Dept. of Entomology
Last updated on Wednesday, November 05, 2003 at 05:00 PM
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