Q. In April, we planted a 12-foot `Drake' elm tree (purchased from a local nursery) in a newly built bed. Evidently, we overwatered the tree, because all the leaves turned yellow and fell off. We quit ...

How do you tell if an elm tree has Dutch elm disease? How do you know if an ash tree is succumbing to emerald ash borer? How do you know if your seemingly healthy tree is about to croak and collapse ...