Dig the hole two to three times as wide as the root system to allow loosened soil for new root growth. Fruit trees like well drained soils so to add 1/3 sand or pea gravel mixed in with the extracted soil is recommended for compact or heavy clay soils. However, the hole needs to be just deep enough so that the tree is planted at the same depth at which it was grown. Do not bury the trunk. The base of the trunk should be at ground level. Backfill the hole with the soil and or gravel mix. Tamp the soil with your foot to remove any large air pockets that may exist. Now build a soil barrier around the circumference of your hole to form a dam that will return water. Finally, water the fruit tree. Soak it. Adding a two or three inch layer of mulch around the tree is recommended.