Whether you're picking out a tree for your landscape or making a list for this season's to-dos, we have your tree care questions answered.
Tree Identification
How To Identify Dutch Elm Disease: Signs & Symptoms
April 13, 2023
Here are common signs and symptoms of Dutch Elm Disease and how to properly dispose of a tree with Dutch elm disease.
Insect & Disease Issues
What Disease is Killing My Maple Tree?
November 17, 2022
Here are common signs of an unhealthy maple and how to save a dying maple tree to help you better protect and preserve your favorite tree.
Leaf & Needle Problems
Why Are There Brown Or Black Spots On My Maple Leaves?
August 22, 2022
Learn what is the treatment for black spots on maple tree leaves including maple leaf fungus and what maple tar spot is.
Leaf & Needle Problems
What Are These Bumps on My Oak Tree Leaves?
June 1, 2022
Why are there bumps or round balls on oak tree leaves? Are these growths on oak leaves because of oak leaf gall or oak leaf blister? Learn what to do.
Insect & Disease Issues
Tree Troubles in Wet Weather: Tri-State Pest & Disease Guide
July 10, 2025
Learn how wet weather impacts tree health in NY, NJ, and CT. Explore common pests and fungal diseases, their symptoms, and the trees they affect.
Davey Knowledge
When Do Tree Leaves Come Back In Spring?
March 21, 2022
In spring, when exactly do trees leaf out and bloom? Click here for the leaf out dates in your region - and learn why your tree is not growing leaves in spring.
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