I wonder if anyone in "Freeze/thaw," Tennessee or other similar mid-south locations can tell me if hypertufa containers overwinter well? I've not made anything from hypertufa yet, but this forum is so informative and inspiring that I'm just about ready to give it a go! My clay pots and crocks chip and crack if I don't move them right up against the house, but the concrete containers hold up really well. I plan to anchor these hypothetical hypertufa containers in my garden in such a way that it would be a real pain to move them. Would sedum or succulent type plants object to winter covering if it were necessary? Thanks in advance for any information you share with me.