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.
Davey Knowledge
Why Some Trees Change Color Earlier Than Others
August 21, 2026
Wondering why one tree is turning yellow while the rest are still green? Learn which tree species naturally change color first, what causes premature fall color, and when early leaf color may signal tree stress.
Plant Health Care
How To Protect Palm Trees In Winter
January 20, 2022
Being proactive is important for winter palm tree care. Here are winter palm tree care tips on palm fertilization, palm tree mulching, palm tree watering, and palm tree wraps and covers.
Plant Health Care
How to Look After (or Revive) A Potted Christmas Tree
December 20, 2022
While your tree's inside, you've got to keep it as healthy-as-can be so that it thrives for years when you plant it. To keep it in good spirits, first...
Plant Health Care
Can You Stop A Fruit Tree From Leaking Sap (Cherry, Plum Or Peach)?
May 4, 2022
Colleen said, “I have a plum tree that's oozing sap, and many branches feel dead. Is this OK?” Stop the tree from leaking sap and see if plum tree sap is edible.
Insect & Disease Issues
The 101 on Emerald Ash Borer
May 24, 2021
Learn the latest about emerald ash borer - including how to identify emerald ash borer symptoms earlier.
Insect & Disease Issues
Tree Pests vs Beneficial Insects
May 30, 2024
Beneficial insects can play a vital role in maintaining the health and balance of tree ecosystems by preying on or parasitizing harmful insects, pollinating flowers, decomposing organic matter, and contributing to nutrient cycling. Let’s explore the world of tree pests versus beneficial insects.
Davey Knowledge
Vertical Split In Tree Trunk: Can It Be Repaired?
February 22, 2024
Let’s learn more about what causes a tree trunk to split vertically and how to repair a split tree trunk.
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