Noxious Weeds

Non-native with limited distribution. Preventing new infestations and eradicating existing infestations are of the highest priority. Eradication is required by law.

Non-native, high priority, of varying distribution. Classified by the state for control in regions where they are not widespread. Where already abundant, control is decided at the local level. Some species are Class B Designate weeds, which require stricter controls.

Non-native with many species widespread. Long-term programs of suppression and control are local options, depending on local threats and feasibility of control.