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Weed Identification

State Law requires all landowners to manage noxious weeds on their property. The following weeds labeled “List A”, “List B” and “List C” under Colorado Noxious Weed Act, are considered a threat to the economic and environmental value of our state lands. These listed under the Noxious Weed Act shall be managed under the provisions of this article. The noxious weed species under this act are defined as follows:

“List A” species, which means rare noxious weed species that are subject to eradication wherever detected statewide in order to protect neighboring lands and the state as a whole;

“List B” species, which means noxious weed species with discrete statewide distributions that are subject to eradication, containment, or suppression in portions of the state designated by the commissioner in order to stop the continued spread of these species;

“List C” species, which means widespread and well-established noxious weed species for which control is recommended but not required by the state, although local governing bodies may require management.