The parent plants of seeds I sent to the Seed list this year were several varieties of R. bifida. They did not lose their leaves during our first freeze of 24f for one night. Then, about three weeks later Central Texas had a cold sweep with about three nights and three days of cold between 22 and 24f. This killed many succulents, hippeastrum in pots above ground, agaves, ornamental cactus and opuntias. The difference was, I believe, that the cold lasted for a longer time. The Rhodophiala are still up, as though nothing had happened. Of course, every freeze event is different. -Cynthia Mueller Cynthia W Mueller