My apricot tree is ten years old. This year it has produced a few leaves on a few branches (one side of tree only) and they immediately wilted. There are no buds on most of the tree. I cut some of the small branches, and they are dead. Some of the bark has a green fungus or mold on them, and roots near surface seem to be in bad shape - very fragile. Have I over-watered? Is it diseased? If I leave it alone but fertilize it, will it come back next year? Is it simply dead?