Apple tree does not bloom
I have a question about my three apple trees. The varieties are Gravenstein, Cox Orange Renette and, I think, Holstein Cox. Last year all three trees were in full bloom, with plenty of fruit sets. I had been advised to remove quite a number of these fruit sets so that the remaining fruits could develop better, and that's what I did.
Unfortunately, a large number of the apples had rotten spots on them, or were completely rotten, despite keeping a regular eye on them! The apples were also smaller than they had been in previous years. This year it was only the Gravenstein that came into bloom (though very few flowers compared with previous years), and the other two trees didn't produce a single flower between them! Both trees developed only leaves, with one tree having a large number of water shoots. What has happened to the trees?