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Solitary planting

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Outdoor volunteer events

Come volunteer to help improve King County's stream corridors and urban forests by planting native trees and shrubs to improve the area for wildlife and water quality.

Events are on Saturdays from 10 a.m. to 2 p.m. unless otherwise noted*

To join a planting event, please register with the volunteer coordinator listed with each event.

  • March 25
    Celebrate Hamm Creek restoration progress with a tree planting & work party
    Support a community-led forest and wetland restoration project near the Duwamish River at a tree planting and work party event set for Saturday, March 25, at Hamm Creek-Point Rediscovery from 10 a.m. to 2 p.m.

    10074 17th Place South in Burien
    This family-friendly event is free, and light refreshments will be served. Parking is available at the Sea Mar lot located across the way at 10001 17th Place South. People should dress for the weather, and waterproof shoes or boots are recommended.
    Additional information about the event is available at The Dirt Corps Facebook page or by contacting Cari Simson at Urban Systems Design at 206-234-5102.

  • March 25
    Carnation Marsh Natural Area (Carnation)
    Come help out the newly planted trees and shrubs by mulching around them. This will keep the weeds from growing and water in the soil so they don’t dry out this summer. This site is near Carnation and an important wildlife site.
    Contact Tina Miller.
  • April 1 (9 a.m. to 1 p.m.)
    Dick Thurnau Memorial Park (White Center)
    Our event at Dick Thurnau Memorial Park will be focused on removing the last remaining ivy patch in our restoration site and spreading woodchip mulch. We will also tour this great park and learn about the plants and animals that reside in the park.
    Contact Lina Rose.
  • April 1 (9 a.m. to 1 p.m.)
    King County Greenhouse and Nursery (Maple Valley)
    Come pot up native trees and shrubs for our King County Greenhouse and Nursery. These plants are used for our restoration plantings next fall and winter. Great activity for the whole family. 
    Contact Tina Miller.
Get outdoors

Backcountry trail work

Give back to those trails you love! Join King County Parks and the Washington Trails Association this fall and winter to rebuild and repair backcountry trails.  Learn to retread a trail, build a turnpike or solve drainage problems.

To register contact Washington Trails Association (WTA) at or call 206-965-8561. Please note that this event requires hiking to the site; event is limited to 20 people and typically would be 6-12 volunteers in size.

Events are Tuesdays - Saturdays, 8:30 a.m. to 2:30 p.m.

  • March 21-25
    Squak-Cougar Connector
  • March 28-April 1
    Grand Ridge Park

Other volunteer opportunities

Be a Weed Watcher
Sign up to adopt a trail or lake , keep an eye out and enter weed survey data and locations.

Miller and Walker Creeks volunteer calendar
Plant native trees and shrubs, pull invasive, non-native plants and clean up litter at these Puget Sound creeks.

Native plant holding facility
Groups are needed to care for salvaged native trees and shrubs at our holding facility near Sammamish. To schedule a group work party, please contact Cindy Young.

Adopt-a-Park or Trail & Park Ambassador Programs
These programs provide opportunities for groups or individuals to help maintain King County's 180 parks, 175 miles of regional trails, and 130 miles of backcountry trails.  For more information please contact Laurie Clinton, volunteer program manager.

Salmon counts and habitat restoration

  • Miller and Walker Creeks Stewardship 
  • Help restore these creeks in SW King County, pick up litter and pull noxious weeds.
  • Volunteer for Salmon!
  • Green River habitat restoration - students needed! Learn about restoring habitat while planting trees and shrubs. Groups of volunteers are needed for restoring habitat along the Green River. Weekdays preferred. 4th grade and up. Please contact John Koon.

Volunteer Lake Stewardship Program
Get outside to help monitor water quality at select lakes in King County.


Master Recycler Composter Program
Sign up for free training to learn about waste reduction, recycling, solid waste impacts on climate change and public outreach, and help other citizens reduce waste.

For more information about volunteering in King County, please contact Laurie Clinton, Volunteer Coordinator, King County Parks and Recreation Division.