Parks, arboretums, gardens and other outdoor areas in King County may participate.
No EPA‐registered pesticides are used in the normal maintenance of the park or recreation area. Special exemptions are given for limited IPM based use of an herbicide to remove a noxious weed where this is the only feasible recommended method according to King County Best Management Practices, or in the case of an insecticide used to remove dangerous insects (wasps, hornets) as long as adequate notification or signage is used to warn the public.
Children’s play areas and lawns are pesticide‐free. In outlying areas of the site: flower beds, fence lines, natural areas and playing fields, grounds managers use their own IPM policy to determine pest control needs and minimize use of pesticides.
The Environmental Protection Agency says that a pesticide is any substance or mixture of substances intended for preventing, destroying, repelling, or mitigating any pest.
Noxious weeds are non-native plants that grow rapidly and overwhelm natural and agricultural areas. They can clog waterways, destroy native habitat, or lessen crop yields and value. Some are poisonous to humans or livestock.
Washington state law requires public and private landowners to control certain noxious weeds that are not yet widespread and where there is still a chance to prevent them from spreading to the rest of the state. Managing noxious weeds effectively and safely may in some situations require careful use of pesticides. Read a Citizens Guide to Noxious Weeds (PDF) for a general overview, or visit King County’s Noxious Weeds.
For questions about natural areas and weed control, or to report a noxious weed site, contact the King County Noxious Weed Control Program, 206‐296‐0290.
Duvall – All city parks
Hunts Point – All city parks and playfields
Olympic Sculpture Park – Seattle Art Museum
Port of Seattle – All 60 acres of port parks have been 100% organic since 1998
Seattle University – Pesticide-free methods since 1998
Shoreline – All city parks
United States Forest Service– Alpine Lakes Wilderness, Henry Jackson Wilderness, Wild Sky Wilderness
University of Washington-Bothell/Cascadia Community College – Pesticide‐Free since 2006
Washington State Department of Natural Resources – West Tiger Mountain, Middle Fork Snoqualmie and Mount Si