Is it possible to store them over the winter?

Temperatures and moisture conditions for storing bulbs vary per bulb species. For some flower bulbs, the precise storage conditions are known while for others these are unknown. Whenever the climate is mild enough for a certain kind of bulb, it is advisable to leave them undisturbed and mulch them well before the winter starts. In many cases, these plants, which include Agapanthus, Amaryllis belladonna, Crinum, Canna lily and Lilium (lilies), will produce a better flowering display the next year. When grown in containers, it is usually best to keep these bulbs in the pot and provide it with the right conditions in the home or in storage (where the bulbs will not freeze).