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.
Invasive Pest Alert for Illinois: Elm Zigzag Sawfly
May 1, 2025
The elm zigzag sawfly, an invasive species, is targeting elm trees in the Chicago region. Most trees recover from this pest, but weakened and stressed trees are at risk.
Leaf & Needle Problems
What Can I do About Spots on Japanese Maple Leaves or Trunk?
July 12, 2022
Noticing spots, powder or a fungus on your Japanese maple leaves? Whether the spots are white or brown, it's typically not a serious issue. Still want your tree to look good? Get rid of those leaf problems with these easy steps. First...
Property Maintenance & Landscaping
How to Protect Trees from Winter Salt or Rock Salt Damage
February 18, 2021
Restoring tree health after spotting signs of rock salt damage requires management from both you and your local arborist.
Trimming & Pruning
How Often to Prune Trees (Including Oak Trees)
February 14, 2022
How often do you need to trim oak trees? Learn how often to prune trees to and avoid deadly oak wilt.
Insect & Disease Issues
Ganoderma Root Rot Treatment
May 20, 2021
“Ganoderma root rot” is a fungus that causes a wood-decaying infection that occurs through tree wounds, and attacks a variety of deciduous trees, such as maples, oaks, and honey locusts, as well as ashes, elms, and some conifers as well as palms. Here are symptoms and signs.
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
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.
Leaf & Needle Problems
Why Does My Tree Have No Leaves On Top? (Maple, Birch & Ash)
June 6, 2022
Is my tree dead if it has no leaves on top? The top of tree looks dead but the bottom is alive. Learn why your maple tree, birch tree and ash tree have no leaves on top.
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