Noxious Weed Program

As a landowner, you take pride in your property and have an obligation to both yourself and your neighbors to manage noxious weeds on your land. Noxious weeds crowd out native species and take over native ecosystems, which causes unsightly weed infestations and degrades the value of your property.

If an infestation is caught in the early stages, it can be relatively inexpensive to control and possible to eradicate entirely. If left untreated a small infestation can spread and displace native plants; leaving land that is degraded, has a lowered property value and is very costly to treat.  Often, it takes several years of repetitious treatment to manage a weed infestation.

MISSION STATEMENT

The mission of the Montezuma County Noxious Weed Program is to implement a coordinated undesirable plant program utilizing integrated management methods to ensure that all lands within Montezuma County are effectively managed to meet the intent of the Colorado Noxious Weed Act. Management methods include, but are not limited to: education, prevention, good land stewardship, biological, chemical, cultural, and mechanical.

The weed program’s goal is to provide noxious weed management utilizing the following practices:

  • Assist landowners with noxious weed problems through plant identification, weed management recommendations, and development of vegetation management plans.
  • Promote noxious weed education and awareness by way of community presentations, site visits, literature distribution, newspaper articles, and maintenance of on-line information sources on the County Website.
  • Manage noxious weeds on county property and roadside rights-of-way.
  • Coordinate efforts with landowners, land management agencies, and neighboring counties.
  • Identify and contain, reduce or eradicate current weed infestations and reduce or eliminate weed seed production in certain species.
  • Monitor for new infestations and new invasive species so as to prevent new encroachments on unincorporated lands in the County.

Herbicide Label

No matter what chemical is recommended to you it is your responsibility to read the label of the herbicide before applying it.  There are many different factors with each chemical that must be understood before using it.  There can be grazing restrictions, planting restrictions, area restrictions, re-entry restrictions, etc…  Some herbicides will kill trees while others will not.  Some are broadleaf selective whereas some others are kill-all herbicides.  It’s your responsibility to do your research about the chemical to make sure you are using it appropriately in the appropriate area.

THE LABEL IS THE LAW!


MONTEZUMA COUNTY NOXIOUS WEED LIST

List A Species:

Designated for eradication. Click here to download the list

(species that are in BOLD are species known to be in Montezuma County)

  • Black henbane
  • Common tansy
  • Cypress spurge
  • Cutleaf teasel
  • Diffuse knapweed
  • Giant reed
  • Hairy willow-herb
  • Hybrid knapweed
  • Hybrid toadflax
  • Knotweeds
  • Leafy spurge
  • Mediterranean sage
  • Myrtle spurge
  • Orange hawkweed
  • Purple loosestrife
  • Spotted knapweed
  • Yellow toadflax

 

List B Species:

Designated for control and suppression on all lands within Colorado.

(species that are in BOLD are species known to be in Montezuma County).

  • Absinth wormwood
  • Bouncingbet
  • Bull thistle
  • Canada thistle
  • Chinese clematis
  • Common teasel
  • Corn chamomile
  • Dalmatian toadflax
  • Dame’s rocket
  • Eurasian watermilfoil
  • Halogeton
  • Hoary Cress
  • Houndstongue
  • Jointed goatgrass
  • Mayweed chamomile
  • Moth mullein
  • Musk thistle
  • Oxeye daisy
  • Perennial Pepperweed
  • Plumeless thistle
  • Russian knapweed
  • Russian-olive
  • Salt cedar
  • Scentless chamomile
  • Scotch thistle
  • Sulfur cinquefoil
  • Wild caraway
  • Yellow nutsedge

 

List C Species:

Recommended for control and suppression on all lands within Colorado.

(species that are in BOLD are species known to be in Montezuma County).

  • Bulbous bluegrass
  • Chicory
  • Common burdock
  • Common mullein
  • Common St.Johnswort
  • Downy brome
  • Field bindweed
  • Johnsongrass
  • Perennial sowthistle
  • Poison hemlock
  • Puncturevine
  • Quackgrass
  • Redstem filaree
  • Velvetleaf
  • Wild-proso millet

 

Need help identifying a weed?

Report weed infestations

If you see noxious weeds on any Montezuma County road and can correctly identify the species, fill out the Weed Infestation Report Form.

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