Annual Tree Planting Celebration 2025!

Join us at Lake Sammamish State Park to kick off tree planting season and celebrate the completion of our Issaquah Creek In-Stream Restoration Project — the largest project in Greenway Trust history! Volunteers will plant trees and shrubs along the creek, helping to rebuild a healthy forest that supports wildlife and keeps the water cooler for salmon.

This event is great for families, individuals, groups, and work teams. No experience necessary. All tools, training, and lunch will be provided!

Event Timeline:

• 9 – Noon |  Tree Planting Volunteer Work Party
• Noon – 1 p.m. |  Lunch and Celebratory Remarks
• 1 p.m. – 2 p.m. |  Optional Project Tour

This event is free to attend, and we welcome donations to support tree planting and care in the Greenway.

For safety, volunteers are required to wear:

• Long pants (we’ll be working with tools, so no shorts!)
• Sturdy, close-toed shoes (absolutely no sandals)
• Gloves (provided)

In addition, we recommend that participants bring:

• Warm layers, especially during the fall, winter, and spring
• Rain gear
• At least one full water bottle
• Small daypack for snacks, extra layers, etc…

*Subject to change! Check back before the event.*

From I-90, take Exit 15. Follow signs for Lake Sammamish State Park, and go north on 17th Ave NW. Turn left onto NW Sammamish Rd. The entrance to Lake Sammamish State Park will be on your right in about one half mile. Continue straight toward Sunset Beach parking lot – look for Greenway event signs and staff.

Make sure to remember to display a Discover Pass on your vehicle or purchase one from the State Park office.

Washington State Parks and the Mountains to Sound Greenway are partnering together on the multi-year restoration of Lake Sammamish State Park. The State Park provides important habitat for several species of salmon, many birds – including bald eagles, great blue herons, and red tailed hawks – and a wide variety of amphibians, insects and other wildlife, making this a great spot not only for recreating but for wildlife viewing opportunities as well. For more than 20 years, volunteers have worked in the park to reestablish native plant communities and to control non-native weeds from entering the park. 

Trees are more than just beautiful additions to landscapes. Trees improve air quality and reduce greenhouse gases. They shade creeks and streams, cooling water for threatened salmon. Trees also reduce erosion and filter pollutants, improving water quality and providing important wildlife habitat. Forests are crucial to the wellbeing of our communities, and it is our responsibility to help preserve them.

Planting trees is a fun and meaningful way to give back to your community and leave a legacy for future generations. We hope you’ll join us and invite your friends and family!