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1. Diseases of Trees http://seattle.gov/trees/tree-pests/disease-pests Disease Pests Dutch elm disease   Here in WA State: Yes  Infects: American elms  Symptoms: yellowing and wilting leaves which ...
2. Insect Pests http://seattle.gov/trees/tree-pests/insect-pests Insects Bronze birch borer   Here in WA State: Yes Infests: some types of birch trees Symptoms: Their infestation is evident by ...
3. Restoration Starts At Home http://seattle.gov/trees/restoration/homes Restoration Starts At Home You can help restore Seattle’s urban forest by starting in your own backyard! Removing invasive plants is ...
4. Trees & Utilities http://seattle.gov/trees/planting-and-care/trees-and-utilities Trees & Utilities Underground Utilities There are many utilities commonly located under planting strips and your front yard that ...
5. Yard Trees http://seattle.gov/trees/planting-and-care/yard-trees Yard Trees Yard trees add character and beauty to Seattle’s neighborhoods.  Did you know that 67% of the land area in Seattle is ...
6. Street Trees http://seattle.gov/trees/planting-and-care/street-trees Street Trees What's a Street Tree? In Seattle, street trees are regulated by the Seattle Department of Transportation (SDOT). A ...
7. Young Tree Care http://seattle.gov/trees/planting-and-care/young-tree-care Young Tree Care The first five years are critical to the development of your young tree. Follow these guidelines to ensure a healthy ...
8. Mulching Your Tree http://seattle.gov/trees/planting-and-care/mulch Mulch Arguably there is nothing you can do for your tree that is more beneficial than mulch. Proper mulching helps your tree get enough ...
9. Tree Selection http://seattle.gov/trees/planting-and-care/tree-selection Tree Selection Right Tree, Right Place A well placed tree can help conserve energy, provide a visual screen, and provide years of ...
10. Mature Tree Care http://seattle.gov/trees/planting-and-care/mature-tree-care Mature Tree Care Older trees need care too! Here's how: Mulch! A 2-4” thick layer of wood bark mulch around a tree makes all the ...
11. Staking Your Tree http://seattle.gov/trees/planting-and-care/staking Staking Staking is a practice used to anchor, support, and protect recently planted trees. Trees are often staked unnecessarily and ...
12. Structural Pruning http://seattle.gov/trees/planting-and-care/pruning Pruning Pruning young trees to build strong structure is critical to growing a healthy mature tree and avoiding dangerous or unsightly limb ...
13. Protect Trees From Damage http://seattle.gov/trees/planting-and-care/protecting Protecting A healthy tree is generally hardy and resilient. Yet even the healthiest tree can be damaged or killed by common practices. ...
14. Work Plans http://seattle.gov/trees/management/work-plans Work Plans Each year the Urban Forestry Core Team creates a work plan based on the actions identified in the Urban Forest Stewardship Plan. ...
15. Seattle's Canopy Cover http://seattle.gov/trees/management/canopy-cover Canopy Cover Imagine you were in an airplane flying over the City in summer, as you look down, tree leaves and branches would block ...
16. Progress Reports http://seattle.gov/trees/management/progress-reports Progress Reports Every year the City of Seattle evaluates progress toward our goal of increasing tree canopy cover to 30%. Work is ...
17. Ecosystem Services http://seattle.gov/trees/management/ecosystem-services Ecosystem Services Your Trees Count! The Green Cities Research Alliance is happy to announce the publication of "Seattle's Forest ...
18. Urban Heat and Trees http://seattle.gov/trees/management/urban-heat Work Plans Urban heat in our increasingly hot, dry summers can be extreme and dangerous. The urban heat island effect describes how ...
19. Tree Service Provider Directory http://seattle.gov/trees/management/tree-service-provider-directory A searchable directory of the Tree Service Providers who have registered with the City of Seattle in order to conduct tree services in ...
20. About Us http://seattle.gov/trees/get-involved/about-us Learn about our program, browse future events, explore trees online, ask our experts a question, and contact us. Growing and maintaining a ...
21. Trees for Seattle Volunteers http://seattle.gov/trees/get-involved/trees-for-seattle-volunteers Volunteer Tree Lover? Volunteer with us! Do you dream of living in a tree house? Do you eagerly await the first leaf buds in the ...
22. Explore Trees Online http://seattle.gov/trees/get-involved/explore-trees-online Explore Trees Online There is more to explore virtually... Videos One Block Tree Walk Explore the magnificent trees of south Ballard ...
23. Tree Walks http://seattle.gov/trees/get-involved/tree-walks Tree Walks What is a Tree Walk?  Seattle Public Utilities' Trees for Neighborhoods offers over 40 self-guided Tree Walks throughout ...
24. Events http://seattle.gov/trees/get-involved/events Events Join us in caring for and appreciating Seattle's trees: For all events: All ages and skill levels are welcome! Please wear ...
25. Ask Our Experts http://seattle.gov/trees/get-involved/ask-our-experts Ask Our Experts Have a question? Ask our experts! The Garden Hotline offers individualized solutions to garden problems that are ...