Maples leaves look chewed on

Asked July 5, 2017, 4:26 PM EDT

See image attachment. I have 2 Sugar Maples and 1 Sienna Glen Maple on my lawn and they all look the same as this image which is a Sugar Maple. I need help diagnosing what's wrong. Thanks

Traverse County Minnesota

1 Response

Hi,

I'm guessing it's a pest, perhaps caterpillars. Have you seen any on your trees. Look at this info from the U: http://www.extension.umn.edu/garden/diagnose/plant/deciduous/maple/leavesholes.html

There are also some spot diseases, such as tar spot, that can cause discoloration that dry and become holes, but this doesn't look like tar spot to me.https://www.extension.umn.edu/garden/diagnose/plant/deciduous/maple/leavesspots.html