What makes a weed noxious? Invasive, non-native, competitive, prolific, are terms used to describe weeds. When certain species threaten wildlife and the health of native ecosystems, poison livestock, cause economic hardship on agricultural production or pose a threat to human health, they are termed noxious and laws have been enacted that mandate control of these species.
In Colorado, there are three classes of noxious weeds. The Colorado Department of Agriculture (CDA) is the regulatory agency…
