My three year old semi-dwaft Hale Haven Peach tree fruited this year, but they all fell off the tree recently before turning red and ripening. The peaches were still hard, the flesh was a little yellow, but they really didn't ripen anymore after being in a brown paper bad for 5 days. They would start to rot before finishing ripening either in the paper bag or on the tree. The tree looks healthy, is growing, gets 1" water per week, mulched around the drip line, lime/fertilizer, etc. Could it be that some trees are just "bad" and don't produce good fruit? Did i get a "lemon"? All the other varieties of peach trees were cared for the same way and had spectacular peaches. The only thing which may be a factor is that the peaches had a fair amount of Peach Scab (little black spots on the skin) but my Redhaven peach tree had that as well and it's peaches were great???

SHould I just graft a bunch of other peach tree limbs to this tree?