Skip to main content
King County logo

Wild four o'clock flowers


This Class A noxious weed has a very limited distribution in Washington State and eradication is required throughout the state including in King County. For more information on noxious weed regulations and definitions, see Noxious weed lists and laws.

Additional information on wild four o'clock

What to do if you find this plant in King County, Washington

Please notify us if you see wild four o'clock growing in King County. Our program staff can provide the property owner or appropriate public agency with site-specific advice on how best to remove it. Also, because wild four o'clock is not established in King County, we have an opportunity to stop it from spreading if we act quickly. We map all known locations of regulated noxious weeds such as wild four o'clock in order to help us and others locate new infestations in time to control them.

Report wild four o'clock in King County, Washington

Locate wild four o'clock in King County, Washington

Related information

Related agencies

Program offices are located at 201 S. Jackson St., Suite 600, Seattle, WA 98104. To contact staff, see the Noxious Weed Control Program Directory, send an email, or call 206-477-WEED (206-477-9333).