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.
Tree Planting & Transplanting
Is it Safe to Plant Trees in Summer?
August 4, 2021
You may be tempted to plant trees in the summer when the sun is shining, but is summer a good tree planting time? Follow these rules for best times to plant a tree so you can give your tree a solid start.
Tree Planting & Transplanting
Plants Under Trees: Protect the Root Flare
September 18, 2025
Plant under trees without smothering the trunk. Choose clumping, shallow‑rooted companions, keep the root flare visible, and build a breathable mulch ring.
Leaf & Needle Problems
What Are These Water Marks On My Tree Leaves?
May 11, 2023
Tubakia leaf spot on oak is often confused with oak anthracnose. One way to tell them apart is the timing of leaf spots. Learn more.
Trimming & Pruning
Signs Your Trees Need Pruning
March 20, 2025
Knowing when it’s time to trim your trees and how to protect trees after pruning are the first steps to creating a schedule that keeps your trees happy and healthy year-round.
Tree Selection Guide
Best Trees For Fence Lines
May 25, 2023
Here are some of our recommendations for best trees for a fence line.
Trimming & Pruning
What Exactly Does The Dormant Season Mean For Your Trees?
December 17, 2021
Tree dormancy is a phrase often used while discussing landscaping, but what exactly does it mean?
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