Dig your hole about 3 feet in diameter but no deeper than the root ball of the plant. Loosen the roots and the root ball before planting and back fill with the soil that you removed from the hole and water in well. Do not use fertilizer at this time. If it will make you feel better, you can water it in using a root-stimulator solution, which can be bought just about anywhere garden supplies are sold.
For more detailed information and photos, visit the Trees and Shrubs: Planting site at eXtension.
