Colorado Noxious Weeds

Colorado noxious weeds are plants that displace desirable vegetation. They threaten our drinking water supply, agricultural crops, pasture land and native habitat. These weeds could be brought as seeds in ornamental planting mixes, in nursery stock or on the undercarriage of vehicles. They do not have natural enemies like insects and diseases, and able to adapt to Colorado climate. Some of them have root systems 15-30 feet long and produce thousands of seeds per year. All these factors make it very difficult to eradicate Colorado noxious weeds.

Colorado noxious weeds lists

There are several lists of Colorado Noxious weeds:

List A includes weeds that must be eradicated wherever detected in order to protect neighboring communities and the state as a whole. Examples of List A species are African rue, Camelthorn, Common crupina,Giant reed, Knotweed.

List B includes species the spread of which needs to be stopped. Examples of List B species are Absinth wormwood, Canada thistle, Russian

Meadow Knapweed

knapweed.

List C. The goal of this list is to provide additional education, research and biological control resources to jurisdictions that choose to require management of List C species. Some of List C species are Field bindweed, Halogeton, Velvetleaf.

The Watch List is designed to serve advisory and educational purposes only; to encourage the identification and reporting of these species to the Commissioner in order to facilitate the collection of information to assist in determining which species should be designated as Colorado noxious weeds. Examples of Watch list species are Common reed, Onionweed, Scotch broom.

For more information on Colorado noxious weeds, visit the Colorado Department of Agriculture website.

If you suspect noxious weeds on your property, consult a SprayTech expert consultant immediately. Our friendly staff is glad to answer any questions you have, call or contact us today!