Answer: Water can certainly affect flowering, but mild temperatures can also contribute to fewer blooms than normal. Some trees get into an alternate bearing cycle where every other year it puts out a bumper crops of flowers and the next year flowering is very sparse. As long as your tree looks otherwise healthy, I wouldn't be too concerned about the poor flowering this year. Trees have a way of adjusting to the curves nature throws and while we don't always understand what contributes to good and poor performance, the trees do. Next winter, if rainfall is low, make an effort to water your trees deeply every few weeks. I think you'll see a real difference in their performance the following spring.
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