Carol Dee
Garden Master
We have a lovely hard maple in the back yard. 15 years old maybe. All of a sudden I notice this on 1/2 to 1/3 of the leaves. The hard maple on the west side of the house or those across the street do not have it. I do not see any insects or eggs. DH thought all the rain/storms and hail lately could be this cause. But why just this tree? Any ideas?