Just noticed that my ash tree, 13 years old, is dying. The branches are drying up and the leaves are falling. At the end of winter and early spring, it was full of leaves but it has since gradually begun losing all its leaves. It gets water regularly because it sits on the lawn with a sprinkler system. What can I do?
The first thing that came to my mind was the emerald ash borer - dead branches and leaf loss are possible signs. I would review the following article and verify the presence of this damaging insect: