posted 10 years ago
In my personal experience, old peach trunks get rot and then suffer fatal wind damage. Once rotted out I don't think an old peach could support the load of a freshly coppiced canopy.
The best option I think I could suggest is to sprout some of the peach seeds from your favorate trees, and then use them for grafting rootstock for the same trees. Typically when I graft sprouted seedlings, I try to leave one branch on the tree as the wildtype, so it could at least act as a pollunator. Don't be surprised if the fruit from the sprouts is somewhat different from the fruit of the grafts though. Peaches are less variable than apples, and there's a fair chance they will come true to type, but there will still be some variation.