AND you can only make perfect trees of the town's native fruit. Even if you visit a friend's town and get a perfect.... let's say apple, from them... and you plant it in your town... it will become a normal apple tree.
As for your perfect peach tree, keep one of its perfect peaches to use to re-plant it when it "dies" (after that last rotten batch, the only thing to do is Axe it and dig up the stump).
"As the good archmage often admonishes me, I ought not to let my mind wander, as it's too small to go off by itself." -Danilo Thann