Bainbridge Island
Bellevue
https://bellevuebotanical.org/
Bellingham
Carson
https://en.wikipedia.org/wiki/Wind_River_Arboretum
Everett
https://www.facebook.com/BonhoefferBotanicalGardens/
Federal Way
Greenbank
http://www.meerkerkgardens.org/
Kingston
Lakewood
Maple Valley
https://www.lakewildernessarboretum.org/
SeaTac
Seattle
http://www.ballardlocks.org/carl-s-english-garden.html
http://seattlechinesegarden.org/
http://www.southseattle.edu/Arboretum/
https://botanicgardens.uw.edu/washington-park-arboretum/
Shoreline
Spokane
https://my.spokanecity.org/urbanforestry/programs/finch-arboretum/
Stanwood
https://www.facebook.com/BonhoefferBotanicalGardens/
Tacoma
https://www.metroparkstacoma.org/wright-park/
Woodland
Yakima