Noxious Weed Management

Many different plant species are considered noxious weeds by the State of Colorado and the Town of Avon. The 27 species pictured are required to be managed in order to reduce their spread and effect on native vegetation and wildlife.  

The Colorado Noxious Weed Act provides that integrated methods must be utilized in  the management of weeds. Integrated methods include but are not limited to: Cultural, Chemical, Biological and Mechanical management.   

Cultural – those methodologies or practices conducted to favor the growth of desirable plants over undesirable plants.
Chemical – the use of herbicides or plant growth regulators to disrupt the growth of undesirable plants. (e.g., Herbicides)
Biological – the use of organisms to disrupt the growth of undesirable plants.
(e.g., insects, bacteria, pathogens, goats)
Mechanical – practices that physically disrupt plant growth including but not limited to: tilling, mowing, burning, cutting, mulching, hand pulling, and hoeing.

There are best practices for each species, which can be found in the Town of Avon Noxious Weed Management Plan. If you find any of these plants on your property, contact the Public Works Department or email for information about how to best proceed with any of the above practices. 
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In July 1990, the Colorado General Assembly adopted the Colorado Noxious Weed Act. It states, “Noxious weeds have become a threat to the natural resources of Colorado, as thousands of acres of crop, rangeland, and habitat for wildlife and native plant communities are being destroyed by noxious weeds each year,” (C.R.S. 35-5.5-102). A noxious weed is defined as an alien plant or parts of an alien plant that have been designated by rule as being noxious or has been declared a noxious weed by a local advisory board, and meets one or more of the following criteria: Aggressively invades or is detrimental to economic crops or native plant communities; is poisonous to  livestock; is a carrier of detrimental insects, diseases, or parasites; and the direct or indirect effect of the presence of this plant is detrimental to the environmentally sound management of natural or agricultural ecosystems. C.R.S 35-5. 5-104 states, “It is the duty of all persons to use integrated methods to manage noxious weeds if the same are likely to be materially damaging to the land of neighboring landowners.” 

In the Town of Avon, it is the property owners or occupant’s responsibility to control the infestation of noxious weeds and undesirable plants. If the Town receives a complaint on a specific property a warning notice is issued. Failure to comply within specified time period will result in the Town’s Public Works Department implementing weed control at the expense of the property owner. In the Town’s effort to be a more environmentally conscious community, we want to monitor and manage invasive and detrimental species more carefully. This notice is to educate residents on what species are considered noxious and would be subject to enforcement.  

Eagle County offers on-site consultations for herbicide recommendations and a weed management plan development. Educational seminars are available for homeowner associations and recreational groups. Please call 970-328-3553 to contact Eagle County Vegetation Management or contact for more information. 
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