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.
Leaf & Needle Problems
Why Are There Yellow Leaves on Trees in Summer?
July 26, 2021
There are many reasons your leaves could be turning yellow and falling off. Run down the checklist below to help diagnose your tree.
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.
Soil Care & Mulching
The Proper Way to Mulch Your Trees
March 30, 2021
Take a tip from trees in the natural setting when you tackle mulching. Proper tree mulching helps trees retain water, combat weeds and regulate soil temperature.
Trimming & Pruning
Should Mature Trees Be Pruned?
November 3, 2022
Here are some tips for trimming mature trees so you can keep your biggest leafy landscape components healthy. Learn when should mature trees be pruned and how often.
Davey Knowledge
Climate Change On Trees
June 16, 2022
How are forests affected by climate change? Learn more about the effects of climate change on tree species so you can better care for your trees.
Soil Care & Mulching
How to Tell if Soil is Compacted Around Trees and What to Do
October 13, 2021
Is your tree slow growing? You may have compacted soil. Test to confirm, then discover soil compaction remedies. Also see if you can plant trees in compacted soil.
Tree Selection Guide
Fireproof Landscapes With Fire Resistant Plants, Trees & Shrubs
August 8, 2022
Learn what trees and shrubs are fire resistant in California including a fire resistant plant list and trees that can survive forest fires.
Plant Health Care
What Time of Year Do Pine Trees Drip Sap (and Can I Stop It?)
February 21, 2022
What time of year do pine trees drip sap, and how much pine sap is excessive? If it's golden brown, no need to stop tree sap from running or sapping. That's normal in spring. But if you see your pine tree oozing white sap (or a white substance on pine trees), there's a problem. Click here for more.
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