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King County and partners will plant 1 million trees by 2020 across King County in both urban and rural areas. It will take a lot of hard work – and a lot of outdoor fun. One way you can get involved is to volunteer.

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Building healthy forests = a great start to 2018!

We're doing our part in King County's effort to plant 1 Million Trees by 2020 to reduce carbon pollution and prepare for impact of climate change, one of the actions outlined the 2015 Strategic Climate Action Plan.

Join in and help us reach this goal while also restoring habitat for fish and wildlife and enhancing recreation opportunities for all of us.

Calendar of events

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

To join an event, please register with the volunteer coordinator listed after each event.

  • January 20
    Tokul Bypass (Snoqualmie)

    We recently acquired the Tokul Bypass site to help make a connection along the Preston–Snoqualmie Trail. We will be planting trees along the pond to start transitioning the site back to forest. This event is in partnership with Mountains to Sound Greenway Trust.

    Contact Tina Miller.

  • February 24
    Big Finn Hill Park (Kirkland)

    Make it a day by volunteering to build the health of an area of forest formerly filled Himalayan blackberry. We will be planting trees and shrubs to add diversity and ecological value. This event is in partnership with United Way of King County and is a great site for families.

    Contact Lina Rose
    Download Volunteer Event Information

Backcountry trail work parties with WTA

Give back to those trails that you love! Join King County Parks and the Washington Trails Association this winter and spring to rebuild and repair our backcountry trails. Tasks include retreading a trail, building a turnpike, or addressing drainage problems.

Note: These events require hiking to more remote work sites. Events are limited to 20 people, with typically 6-12 volunteers.

Work parties happen Tuesdays - Saturdays, 8:30 a.m. to 3:00 p.m.

January 16-20 Grand Ridge Park (Issaquah)

January 23-27 Grand Ridge Park (Issaquah)

January 30 – Feb 3 Cougar - Squak Corridor Park (Issaquah)

To register, sign up on Washington Trail Association's website. or by calling 206-965-8561.

*Please note that these events require hiking to the work site and are limited to 20 people (typically involve 6-12 volunteers).

Restoration work parties every Saturday through March 31

SHADOW Lake Nature Preserve between Renton and Maple Valley
Includes work on King County's Shadow Lake Natural Area
Questions? Please contact

Other volunteer opportunities

Ring in the new year by planting trees and volunteering with King County Parks!

Join King County Parks and help improve some of the awesome parks, trails and natural areas within the 28,000 acres of Your Big Backyard! Check out the calendar below for upcoming volunteer events over the next five weeks.

See what it's like to spend a day outside with the King County Parks Volunteer Program!

Check out our volunteer program video to see us in action!

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