This is a Mt. Fuji or something like it - a beautiful small cherry. It bloomed and flourished last year and again a great bloom this year. In the course of a few days all the blooms and the new foliage has turned brown/black on several core branches. We are in the fruit-growing part of WA and the tree receives water daily from an automatic sprinkler system. Does anyone have any ideas on what this might be or where to start to save this beautiful tree?