Store bulbs in a cool area below 60 F until planting. In coastal areas, most bulbs should be planted in late December or early January. Coastal gardeners can ensure spring blooms by refrigerating bulbs in ventilated packages until planting. Avoid storing fruit near the bulbs, since fruit-produced ethylene gas can prevent blooming. When bulbs do not receive enough chilling, they bloom close to the ground, on very short stems.
Some bulb suppliers sell bulbs that have already been given a chilling treatment.
Space bulbs in bed according to size. Large bulbs should be 3 to 6 inches apart, small bulbs 1 to 2 inches. For best appearance, plant bulbs in masses. Cover the bed with 2 to 3 inches of mulch after planting. Mulches insulate the soil, maintain even soil moisture and prevent mud from spattering the flowers.