I have taken the liberty to confuse these two genera because there is only a slight botanical difference and pancratium is an old world genus, while hymenocallis belongs to the new world. They are often called spider lilies. They are bulbous plants and include several species. Winter is their flowering time and with ordinary care the same bulb will go on flowering for many years. Like the crinums they should rest in summer. Use a coarse, fibrous loam with some broken up charcoal through the soil and repot if needed in September. When active growth appears they will require abundance of water. As they are evergreen the resting should be only a diminishing of the water supply. Spe-ciosa is a fine species.