Plant your lily bulbs in either the spring or the fall. Lilies like sun but will grow in partial sun or even light shade.
Plant the bulbs as soon as you get them, so they won't have the chance to dry out.
Dig up the soil in the flower bed for your lilies to at least 12 inches in depth. Discard any rocks.
Mix in a lot of peat moss or compost to improve drainage. Lilies aren't fussy about most conditions, but they won't survive in wet, heavy soil.
After you've combined it thoroughly, smooth the soil out evenly.
Dig a hole for each lily bulb that's twice as deep as the bulb's diameter. (This general rule applies to planting depths for all types of lilies.)
Separate the holes by 8 to 12 inches.
Put a little bone meal into the bottom of each hole.
Put the lily bulb into the hole, root-side down, and cover it up with soil.
For a bigger visual impact, dig holes big enough to hold four or five bulbs, add bone meal to the holes, put the bulbs in and cover them up. Separate each group by one to two feet. This arrangement will give you concentrated groups of flowers.
Water the lily bulbs well, but don't soak the ground too much. A good way to check this is to observe how long water stands on the soil after you've finished watering. If after about four hours big pools of water are still standing on the surface, you've given the lilies too much water at one time.
Give your lilies about an inch of water over the course of each week. Check this by putting a plastic container or an empty coffee can in an inconspicuous place in the flower bed where water from the sprinklers can get into it. After you've watered, use a ruler to measure how much water is standing in the bottom of the container. Keep track of the measurements for an entire week to makes sure the lilies are getting enough water.
After your lilies start sprouting, sprinkle a handful of complete organic fertilizer around each flower, and then water them.
When frost kills the foliage in the fall, cut it back to just above the bulbs.