Plant these bulbs in the autumn in loose soil that drains well. Choose a location suitable for their sun exposure, where the young shoots can receive light in the spring. Arrange the bulbs in small groups rather than in a line that is too tight, then respect the planting depth appropriate for their size. Water after planting if the soil is dry to encourage contact with the roots. Keep a discrete marker to locate the groups during their dormant period. In an already planted flowerbed, work carefully between the roots of perennials and avoid cutting them unnecessarily. In spring, let the flowers and foliage develop without covering them with too thick a mulch. Water as needed during a dry spell, especially if the planting is recent or in a container. After flowering, keep all the green leaves to allow the bulbs to replenish their reserves. Wait for them to yellow naturally before removing them. If the groups become too crowded, take advantage of the dormant period to carefully divide them, keeping only the healthy bulbs. In pots, plan for winter protection adapted to local conditions: the roots are more exposed to temperature variations than in the ground.