Be sure to dig a hole large enough to accommodate the plant's roots. Always break up the root ball so that water and nutrients can reach the root system. Plant so the top of the root ball is level with the surrounding soil. Fill around the roots with the soil that was extracted from the hole. Press the soil gently, but firmly, around the root ball, but do not over pack the soil to constrict the roots.
Note: If the plant is placed into the hole as it is removed from the container, the plant will not grow properly because the nutrients and water cannot reach the roots.