My Giant Stapelia has been blooming for a couple of weeks here in Tennessee (zone 7a). It has been fairly warm, but I've had to cover it several nights when temps dipped into the 30s and there were light frosts. I haven't brought it inside yet. Next week is supposed to be cold -- 40s during the day and 30s at night and might bring our first hard frost -- so this will be it for this year. It will go into the garage for the winter very soon.
Kindly ignore the watermark ... I forgot to change my settings after adding some photos to the database. This is my plant!