Answer: The brief answer is that fruit trees need lots of sunshine and lots of water. With that said, proper pruning, fruit thinning and fertilization will keep your apple trees productive and preventative spraying will keep them healthy. Here's a website with tons of information (probably more than you ever wanted to know) about growing apples: http://learningstore.uwex.edu/pdf/A3565.PDF
Within the 28 pages of this apple growing guide, you'll be guided through all the important aspects of successfully growing apples in your own backyard.
Best wishes with your trees!
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