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.
Insect & Disease Issues
Tree Galls in Spring: What Homeowners Should Know About Unusual Growths
March 20, 2026
Noticed strange growths on your tree's leaves or branches this spring? Learn what causes tree galls, how to identify them by species, and when they may signal a problem.
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.
Plant Health Care
Are Bumps on Branches and Trunks (Burls) Bad for Trees?
July 5, 2022
If you spot growing bumps on your tree trunk or bumps on tree branches, those are burls on trees! But are burls bad for trees? Usually not. Burls typically don’t do any harm to trees. But you should get to the bottom of why they're growing. Look for...
Plant Health Care
What's This Green Stuff Growing On Trees And Rocks?
May 7, 2020
Lichen does not pose a threat to your tree’s health. It is completely harmless so there’s no real need to get rid of it. But if the sight of it bothers you, follow the steps in this post to remove it. We highly recommend to not use a pressure washer to remove lichen.
Tree Identification
Tree Identification: Do I Have An Oak Tree?
April 27, 2023
Here are some oak tree identification tips to help you better recognize these landscape giants.
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