Adams County Extension
Colorado Noxious Weeds

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Canada Thistle

Colorado Noxious Weeds

 
List A Species

CDAColorado Department of Agriculture List A species in Colorado that are designated by the Commissioner for eradication.

  • Giant salvinia (Salvinia molesta)
  • Hydrilla (Hydrilla verticillata)
  • Rush skeletonweed (Chondrilla juncea)
  • Squarrose knapweed (Centaurea virgata)
  • Tansy ragwort (Senecio jacobaea)
Bindweed Mites

Aceria malherbae, is a microscopic mite used as a biological control agent for field bindweed.  This bindweed mite can only feed on field bindweed and closely related wild morning glories. It does not damage other plants and can only survive on bindweed. More...


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