Strange spot on bark of maple tree

Asked May 18, 2016, 4:51 PM EDT

I have a wild maple tree that started growing in my yard. It is about fifteen years old. I have notice about ten little white spots that look like the dark bark has been removed. The spots are on the older stronger branches. They are about the size of a dime, but the one in the picture is a little bit bigger. What is it from? Does this tree need a treatment of some kind?

Oakland County Michigan trees and shrubs maple trees

1 Response

Most likely what you are seeing are lichens, a very common problem. There are thousands in as many many different shapes and colors but are completely harmless to the tree. Here's an explanation:

It would be prudent however to watch your tree for any sign of decline such as prematurely falling leaves, drooping or any other signs that something is not right. The person to contact with any unusual tree problems is a Certified Arborist, one who specializes in everything woody. You can find one or more Certified Arborists at Click on Find an Arborist. Arborist evaluations are not expensive and where you can get learn more about everything else in your landscape too. I use on routinely. Just be sure he/she is a Certified Arborist and not a tree trimmer.

Good luck!