Pests & Diseases

A green emerald ash borer on a leaf with its wing casings partially spread, displaying its red abdomen.

The Emerald Ash Borer is Heading to Seattle

April 13, 2023

The emerald ash borer is an invasive ash tree pest heading toward Seattle. As it devastates ash trees across the country, people ask the same questions. When will EAB arrive in Seattle, what can we do to stop it, and how can we protect our ash trees before it arrives?

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Bronze Birch Borer: Symptoms, Causes, Treatment & Prevention

June 21, 2022

Bronze birch borer is killing birch trees throughout the King County area. Learn how to spot the early signs and get effective treatment to save your trees.

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3 Common Tree Diseases Killing Seattle’s Trees

December 20, 2021

Tree care experts in Seattle share signs and solutions for common tree ailments. Stop these Tree Diseases in Their Tracks by Noticing Early Signs All living things can be affected by disease, even trees. Fungal, bacterial, and viral infections are their biggest threat. Washington state is known for its forests and therefore must pay special…

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Oak Tree Decline: Signs, Symptoms & Prevention

September 1, 2021

“Oak tree decline” is a term used to describe a complex and systemic problem frequently found in oak trees. Unless drastic action is taken, this complex disease usually results in the death of the tree.

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Evergreens Turning Brown: Causes, Prevention & Treatment

February 1, 2021

Seattle Tree Care Explains the Impact Weather Can Have on Evergreens What Causes Evergreens to Change Color? Evergreens bring a splash of green to Seattle 365 days a year. But what happens when the gorgeous green starts turning brown? If you’re worried about your Evergreen plants or are looking for ways to keep them healthy,…

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