Lily bulbs should be planted in the autumn in loamy, well-drained soil. For warmer climates where the soil does not freeze, the bulbs need to be refrigerated prior to planting so that they have a cold, dormant period in order to grow.
An individual needs to select a site for planting lilies that receives at least part sun. The soil needs to be well-drained so that the bulbs don't rot in the ground. If it is too dense, it can be amended with compost or organic matter, which has the added benefit of releasing nutrients to the soil.
Prior to planting, the individual should loosen the top 15 inches of soil, then dig holes that are 6 inches deep and at least 8 inches apart. The deep holes are necessary to add stability to the long, growing iris stalks. The bulbs should be placed in the holes with the pointed end facing up. Once the bulbs are in the ground, the gardener can fill in the holes with soil, tamping the soil gently down.
The bulbs need to be watered thoroughly immediately after planting and kept moist throughout the winter. During the summer, the plants need 1 inch of water per week. The plants should be composted during the spring to enrich the soil.