Forterra Fridays: February 2026 Friday, Feb. 20, 2026, 1:00 pm to 3:30 pm We're excited to invite you to volunteer with us at Duwamish Hill Preserve, a Tukwila park providing critical wildlife habitat and public trails in a fairly industrial area. Join us on Friday, ...

"The Trees are Speaking" with author Lynda Mapes The power of persistence. A celebration of renewal. We're excited to announce that Lynda Mapes will headline the Forterra Spring Fundraiser. This vibrant celebration will be Wednesday, March 11, 2026, at Fremont Foundry in Seattle—our largest annual ...

Forterra Fridays: March 2026 Friday, Mar. 20, 2026, 1:00 pm to 3:30 pm We're excited to invite you to volunteer with us at Crestview Park, a beloved community gathering space in Tukwila featuring dog play areas, trails, and natural landscapes. Join us on March 20, from ...

Forterra Fridays: April 2026 Friday, Apr. 17, 2026, 1:00 pm to 3:30 pm We're excited to invite you to volunteer with us for a special Earth Month event at Duwamish Hill Preserve, a Tukwila park providing critical wildlife habitat and public trails in the middle ...

Forterra Fridays: June 2026 Friday, Jun. 12, 2026, 1:00 pm to 3:30 pm On Friday, June 12, from 1:00 PM to 3:30 PM, you're invited to help us remove invasive blackberries at Patterson Creek Preserve.  We'll begin with a short walk through the preserve and hear from restoration professionals about how ...

Forterra Fridays: October 2026 Friday, Oct. 16, 2026, 1:00 pm to 3:30 pm Fall into restoration with us! We’re excited to invite you to volunteer at Duwamish Hill Preserve, a vibrant Tukwila park that provides critical wildlife habitat and walking trails in the heart of an industrial corridor.  ...