cherry trees are a bit fragile, when they have tantrums they are best left well alone for a year (this is advice from my grandad who has beautiful cherry trees in his garden) in addition to this it is apparently a difficult year for cherries and many of them are well below their best, especially as last year was a particularly good year. i dont know what i'm talking about but i have endured a good 2 hour conversastion on the subject with my grandfather only yesterday :-)