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.
Lawn Care & Maintenance
Best Time To Overseed Lawn (Midwest, Northeast, South, West)
August 31, 2022
Here's the best time to overseed the lawn in the Midwest, Northeast, South and West. Reseeding lawns covers bare spots, and overseeding lawns helps with weeds.
Leaf & Needle Problems
Reasons For Early Or Dull Fall Color
October 12, 2023
Seeing fall color sooner than usual this year? Here’s why and what you can do to help your trees.
Tree Identification
Tree Identification Guide: How to Identify an Elm Tree
June 24, 2021
What type of tree do I have? Learn how to identify if you have a beautiful elm tree by these characteristics and common types of elm tree species.
Tree Identification
Tree Identification: Do I Have A Sassafras Tree?
July 11, 2024
What does a sassafras tree look like? If you suspect you have a sassafras tree in your yard, or if you’re on the lookout for one to plant, recognizing its unique features will be crucial. Here are key characteristics and tips on proper care.
Trimming & Pruning
What Happens If You Cut All the Branches Off of a Tree?
October 24, 2022
One cut. Two cuts. It started fine. Until you finished pruning and realized you cut off all the branches! Now what? Over time, it will likely recover. Start by...
Plant Health Care
Why Is Bark Falling Off My Tree (Oak, Pine, Ash, Maple)?
October 19, 2022
Why is your tree losing its bark? Should you be concerned? Click here to learn why bark is falling off your tree - including pine, oak and ash trees.
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.
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