I have a large ash tree in my front yard. I have read and heard about the Emerald Ash Borer being in this area. As a precaution, I had my tree treated by an arborist. That was about 4 - 6 weeks ago. Now all the leaves are drying up and falling off. Is my tree dying? Should I water the hell out of it? Should I do nothing? Please help! I would really hate to lose this tree. Thank You