Thanks everyone. I grow them in standard potting soil for the most part, keeping it moist to wet, in shade. The plant starts growth in early May, then typically yellows and dies down in August-September. I keep it moist year round. The pot is kept outdoors year around... winter it gets down to high teens or low 20's where I live. Days 95% of the time above freezing during the winter, so the pot doesn't freeze solid for more than a day.
I recommend top watering, and just keep it moist.
I have also dug up the bulbs, place them in just-damp paper towels, individually, and stored them in a ziplock bag in the refrigerator over the winter. In spring, they'll show signs of life, then just pot them up. You can put them in the fridge early fall.
Hope this helps.
Homer