Home gardeners find definite advantages to growing dwarf peach trees. Since many genetic dwarfs only reach 6 feet tall, compared to standard varieties that may be 25 feet high and as wide, ladders are unnecessary for pruning and harvesting. If pests or diseases strike, signs are likely detected earlier. Dwarf trees produce well, because more can be planted in a small area, and they fruit sooner. All peaches perform best in U.S. Department of Agriculture plant hardiness zones 5 to 9.