Please join us for the 26th Annual Noxious Weed Conference on February 26, 2025!

Take pride in controlling Noxious Weeds!

The Mission of the Noxious Weed Control Board of Grant County is to preserve all lands from the degrading effects of noxious weeds, by promoting weed control through public education, personal contact with landowners, and carrying out the state of Washington weed law under RCW 17.10

What is a Noxious Weed?

Noxious weeds are invasive, non-native plants that threaten agricultural crops, local ecosystems, or fish & wildlife habitats. There are three classes of Noxious Weeds: 

Class A

Class A Weeds are non-native species with a limited distribution in Grant County and Washington State.  Preventing new infestations and eradicating existing infestations is of the highest priority.  Control of these species is required by law.

Browse Weeds
Class B

Class B Weeds are non-native species that are presently limited to portions of Grant County.  Preventing infestations of Class B Weeds is a high priority.  In regions where a Class B species is already abundant, control is decided at the local level, with containment as the primary goal.

Browse Weeds
Class C

Class C Weeds are other non-native weeds found in Grant County.  Many of these species are widespread in the county.  Long-term programs of suppression and control are expected for Class C Weeds.

Browse Weeds

Centaurea diffusa

Highly branched stem

White or Pink flowers

Long taproot

Learn More
Questions? Contact the Board!