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What is a noxious weed?
A noxious weed is a non-native plant which has no agricultural or health benefits, and degrades native plant and wildlife habitat while posing a threat to producing lands or human health.
Who needs to control noxious weeds?
It is the landowner’s responsibility to control noxious weeds and noncompliance may be penalized under the Colorado Noxious Weed Act 35-5.5. The Archuleta County Weed and Pest Department controls noxious weed infestations on county property and may be contracted by private landowners. The department also provides herbicides and other pesticides as well as being a resource for alternative methods of control.
The links below describe some of the most common invaders in Archuleta County separated by flower color.
Noxious weeds with white flowers:
Oxeye Daisy
White Top
Field Bindweed
Noxious weeds with purple flowers:
Russian Knapweed
Spotted Knapweed
Canada Thistle
Bull Thistle
Musk Thistle
Scotch Thistle
Houndstongue
Dames Rocket
Noxious weeds with yellow flowers:
Leafy Spurge
Yellow Toadflax
Common Mullein
Black Henbane
Noxious grasses:
Cheatgrass
Bulbous Bluegrass
Noxious trees:
Salt Cedar
Russian Olive
For the entire Colorado Noxious Weed List click here.