I hope you can help me with my question on our Kimberly Queens. We have 3 very large Kimberly Queens planted in urns outdoors. We live in the middle Tennesse area, and winters are pretty brutal, well below freezing throughout the winter. We have no option of bringing them inside. They were planted this spring and have grown to an incredible size, and are the envy of all our friends and neighbors. It was our understanding when we purchased them, they would survive the winters potted. I have done a little reseach and am a little confused on what to do. Do we cut them back? How do we protect the plant in a urn throughout the winter.