We moved into a new house two years ago with a mature peach tree and both summers the tree has dropped all fruit. This year there are still a few left, but they are small (no larger than 2") and green to yellow.

I don't know the variety of peach.

Last year the tree had fungus, and I thought that was the cause of the fruit loss. But this year there was no fungus and I watered regularly and fertilized.

Any suggestions?