Kitsap County Noxious Weed Control Program and Board

Noxious weeds are invasive, non-native plants that can threaten agricultural crops, local ecosystems, and human and livestock health. 

To learn more, see Kitsap County's 2024 Noxious Weed List.

In 1969, Washington State established RCW 17.10 to limit economic loss and adverse effects to Washington's agricultural, natural, and human resources due to the presence and spread of noxious weeds on all terrestrial and aquatic areas in the state. The law created a state Noxious Weed Control Board and required each county within Washington State to establish their own Noxious Weed Control Program and Board. The Washington State Noxious Weed Control Board annually publishes a list of noxious weeds identified for control and/or monitoring, which must then be adopted by our county Noxious Weed Control Board within 90 days. Listed weeds are separated into three classes: Class A, Class B, and Class C.
A description of these classes and the latest state list can be found in the document linked below. 

Identifying and Reporting Noxious Weeds

As a gentle reminder, RCW 17.10 requires landowners to keep noxious weeds from going to seed on their site and spreading to neighboring locations. For immediate noxious weed control and removal services, see the following list of businesses that are known to provide noxious weed control work in Kitsap County: Noxious Weed Control Service Providers. The resources listed below may be able to help you identify and manage small instances of noxious weeds on your own. 

If you have or know of a larger noxious weed infestation, 
please report through SeeClickFix at Kitsap1 online or call +1(360) 337-5777.

Need help identifying a weed?
Visit the Washington State Noxious Weed Control Board Weed Search.

Additional Resources

Washington State Noxious Weed Control Board for help identifying weeds, safe disposal tips, guidance on gardening with native species. Informacion en Español

Kitsap Conservation District for agriculture technical assistance including pasture management, native plantings and creating wildlife habitat.

Kitsap County Washington State University (WSU) Extension Office for resources related to small farms, master gardeners and water stewardship programs. 

Submit an Inquiry

Please fill in the inquiry below, and we will get back to you shortly. 

For urgent matters, please contact Kitsap1 at +1(360) 337-5777.

Free Noxious Weed Disposal

Free noxious weed disposal has ended on November 30, 2024.

Stay tuned! We plan to bring back free disposal in 2025!

Learn about what facilities qualify and how to participate here.

Long Lake Aquatic Invasive Plant Management

Kitsap County has contracted with AquaTechnex to conduct aquatic invasive species control work on Long Lake over the summer and fall of 2024. A notice has been sent by mail to all residents within a quarter mile of Long Lake, which provides more detail on the species being treated and the chemicals being used. AquaTechnex will posts signs in treatment areas within 48 hours of treatment. The signs will describe any water use restrictions or advisories. 

The work being done is part of a Washington State Department of Ecology grant-funded project, with matching funds from Kitsap County's Noxious Weed Control Program. The work will follow guidance provided by the Integrated Aquatic Vegetation Management Plan (IAVMP) developed in 2022.