Noxious Weeds of Colorado

Noxious weeds are non-native plant species that grow in areas where they have not historically occurred. This can be very disruptive to native vegetation and entire ecosystems. They can be damaging to native species, drinking water, agriculture, and natural habitats.

This is a guide to help identify noxious weeds that are known to grow in Colorado on your own property or on public lands! The more we know about where these weeds are, the better we can combat them. less ↑