I moved into my grandmothers house 3 years ago after she passed away and she used to garden a lot and had a couple Maple trees and 2 Apple trees. One Apple tree was cut down and the other is in the shadow of one of the Maples for a big part of the day. The tree is was apparently rescued from a compost pile about 10 years ago. It is only about 8 or 9 feet tall and 3 people holding hands could surround its branches. The trunk in only about 6 inches around. It produces about 10 or 15 small mutant red bitter apples (3 can fit in the palm of your hand). What I am hoping for with this paragraph is to see if anyone knows what I can try to help this tree, types of fertilizer, more water? It gets what water nature gives it and I pruned it last year and it has already grown back. Right now it has about 12 blossom clusters. I am in Northern Michigan (Not the U.P.) if that is helpful. Thanks for any help.