Thanks, Leo. The original idea was to house the Lachenalia in the cold frame until the really severe weather arrived. That's usually just after the holidays in most years - early January. Up until then we have the sort of conditions you described: overnight freezes and daytime temps above freezing. I'm feeling my way here and still learning. Sometimes I feel I'm getting away with murder with the cold frames, but there definitely are limits. The Parma violets in the frame looked fine today, a day when the air temperature finally got above freezing only in the early afternoon. If the Lachenalia produce offsets this year, I'll try those in the frames next year. But I'm pretty sure they'll have to be brought in in late December. Jim McKenney Montgomery County, Maryland, USA, USDA zone 7, where I discovered today that I'm the proud possessor of seed, presumably apomictic seed, of Nerine 'Corusca'.