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.
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.
Property Maintenance & Landscaping
Managing Deer Browsing on Your Property
January 19, 2021
The threat of deer feeding continues to increase for a variety of plant species, but there are a few techniques you can use to manage deer and reduce damage to your plants.
Tree Selection Guide
Brilliant Fall Foliage: Best Trees For Fall Color
October 21, 2021
As you plan your landscape, consider trees that provide seasonal beauty in your yard. Here’s a full list of top trees with the best foliage in fall.
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.
Plant Health Care
Are You Overwatering Your Mature Tree? Smart Watering Tips for Established Trees
May 15, 2026
Overwatering is one of the biggest risks to mature trees. Learn how to spot the signs, adjust watering frequency, and protect your tree's long-term health.
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