Invasive Plant Rules in Olympia, WA (2026)
1 verified invasive plant rules for Olympia, Washington, sourced directly from the municipal code and official government pages.
Verified from official government sources
Prohibited Species
In the City of Olympia, Washington, noxious weeds are prohibited on any premises. Under Olympia Municipal Code § 16.18.020, every owner, lessee, occupant or agent must control thistles, tansy ragwort and other noxious weeds, including on the bordering road to its center, as often as needed each year to stop them going to seed.
Olympia WA Noxious Weed Control Duty and Prohibition
Some RestrictionsOlympia Municipal Code § 16.18.020
A. Duty of Owner. It shall be the duty of every owner, lessee, occupant, or agent thereof or of any person having the care and charge of any land or lands, improved or unimproved, enclosed or not enclosed, in the City, to control or cause to be controlled using methods acceptable to and recommended by the Thurston County Weed Control Board all thistles, tansy ragwort, or other such noxious weed...
Looking for Thurston County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Olympia city rules.
Invasive Plant Rules in Thurston County →