Protect tuberous begonias from hard frost

Q. My hanging basket (tuberous) begonias are still looking good, but I don’t know how to handle the plants when it gets colder. How do I preserve the tubers for planting again in the spring?
A. The tubers need protection from hard frost. As temperatures begin dipping close to freezing, move the baskets up against a house wall, under a broad roof overhang. Clear away the top growth when the stems detach easily at a slight touch. Wrenching them away can damage points of future growth on the