I've reported this in the past on this list, but I'll mention it once more. Rhodohypoxis have survived several winters here in the bog trays of my zone 7 garden. They are very vulnerable to rodent predation apparently. My enthusiasm for these plants is somewhat tempered by the fact that from a yard or two away, they look just like garden impatiens. Jim McKenney Montgomery County, Maryland, USA, USDA zone 7, where meteorological spring has arrived with an overcoat.