Because it's not actually a palm, the name of this succulent is confusing. There are some freezing temperatures in our area, but nothing like the extreme winters elsewhere. It is up to you when the bloom stalks should be cut. Cut back on watering in the winter when the leaves have fallen off. This will allow your succulent to have access to water for longer periods of time and make it more likely that they will survive. A lot of the leaves root and grow new plants, but they take a lot longer than the stem cuttings. Glass acts as a mini greenhouse and keeps water from evaporating faster.