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In an effort to prioritize the necessary work for noxious
weed prevention and management, the Washington State Noxious
Weed list is separated into three levels of classification.
The categories are as follows:
Class A:
- not native to the state
- limited distribution, new invader
- prevention of seed production mandated statewide
- a serious threat
- goal: eradication
Class B:
- not native to the state
- abundant in some areas; unrecorded
or of limited distribution in other areas
- a serious threat to uninfested areas
- goal: containment and eventual eradication
- prevention of seed production in designated areas/counties
Class C:
- any other noxious weeds
- abundant or widespread
- weeds of special interest or concern
- control at county discretion
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