Yellowing leaves typically mean that the tree is under stress of some sort, like drought. As you are aware, Michigan has had a drought this summer. Stress makes the tree more vulnerable to aphid infestations, which is a special issue.
Yellowing leaves typically mean that the tree is under stress of some sort, like drought. As you are aware, Michigan has had a drought this summer. Stress makes the tree more vulnerable to aphid infestations, which is a special issue.