Trees for Seattle
Trees for Seattle is the umbrella for all of the City of Seattle's urban forestry efforts. Our commitment is to ensure that Seattle's urban forest is healthy, vital, and growing. You can find information through our website here, or you can contact us at firstname.lastname@example.org or 206-684-TREE (8733). You can also follow us on facebook or sign up for our monthly newsletter.
Celebrate Arbor Day!
Saturday, October 20
9 am - 12 pm
Soundview Playfield, 1590 NW 90th St [map]
RSVP here or
The crisp feel of fall is in the air, and it is time to celebrate Arbor Day! Volunteer with us to keep our urban forest thriving. Arbor Day activities include volunteer tree planting and care, Ask an Arborist booth, a neighborhood Tree Walk, apple cider press, and more! Join the City of Seattle, King County, WA Department of Natural Resources, Forterra, Microsoft, Geocaching, Seattle Audubon, City Fruit, and Plant for the Planet in celebrating the urban trees that make Seattle great.
Illegal Tree Removal on Private Property
If you observe what you think is illegal tree cutting on private property please report it to the Code Compliance Division of the Department of Construction and Inspections.
Please do this even if the trees have already been removed. It is extremely helpful to know the name of the tree cutting company. If there is no company name on vehicles or the workers don’t want to give it out providing the license plate number is helpful.
Explore Seattle's Street Trees
Have you ever wondered what neighborhood in Seattle has the most street trees? Or worried about the impact of invasive pests on our urban forest? Or wanted to know what work the Department of Transportation is doing for the trees along your street? Now there is a really easy way to answer those questions and many more.
Trees for Seattle is excited to launch an online story map outlining how we manage and care for Seattle’s valuable street trees. Our easy format will help you explore our management units, tree canopy cover, environmental justice focus, the resiliency of the urban forest, and much more. If you are a tree lover in Seattle, you are going to find something relevant to you - even if you are just looking for interesting trivia for your next dinner party.
2016 Canopy Cover Study
Canopy cover is the percent of the city that's covered by trees, as seen in an aerial view. Canopy cover is an important management tool for the City to understand the extent and distribution of trees in Seattle. Seattle's goal, established in 2007, is to reach 30% canopy cover by 2037. The City of Seattle’s most recent canopy cover study, using data from 2016, found that 28% of Seattle is covered with trees. You can find more information here.
Stop Tree Topping
If your trees are being pruned, be sure they are not being topped. Tree topping is an outdated pruning practice that indiscriminately removes large amounts of leaves and branches. It looks terrible, causes serious damage to the tree, and often turns a safe tree into a safety hazard. Check out this great resource from the City of Tacoma on why tree topping is a terrible way to treat your tree. If you are hiring someone to prune your trees, make sure they are an ISA Certified Arborist. A legitimate arborist will never recommend tree topping.
Street Tree Manual Available
The Seattle Department of Transportation (SDOT) has a great new resource to provide a one-stop tree care reference for residents, developers, contractors, and tree service providers. The manual outlines the requirements and standards established in the 2013 Street Tree Ordinance. Click this link to open and explore the new manual.
If you have questions about the manual, contact SDOT at (206) 684-TREE or Seattle.Trees@seattle.gov.