I leave them out all year in dappled shade and I water them all year. The
tops tend to die to the ground when it gets hot for the summer (say, over
104F / 40C) and then resprout in the fall, growing all winter. They don't
seem to freeze in our moderate overnight frosts.

My bulbs are from a friend in St Louis, Missouri, who digs them each fall,
stores them in her garage over the winter, and replants them in spring.
They bloom for her in early summer.