Standard-sized apple trees may grow to 35 or 40 feet in height. You might be able to keep a standard-sized tree under 20 feet tall through pruning, but the standard-sized apple tree is just too vig ...

Your proposed spacing could be too crowded for all but the most dwarf apple trees and will likely be too close for peach. Count on the trees maturing as wide as they are tall.

The Malus coronaria learned to fight frost by blooming two or three weeks later than the trees that produce cultivated varieties of apples like Honeycrisp or Red Delicious.