I bring in a pot of mini papyrus, a few snowflakes, pot of bocopa, 3 or 4 water hyacinths and anything else that will die from the cold and keep them in a rubber maid tub in the sun room. They get a little peaked but when spring comes I throw them back out in the ponds and they perk up and multiply quickly. I put the waterlilies and other pots at the bottom of the pond and they usually make it okay. I am in a warmer zone that you.

Bald Cyprus should be okay outside. How big is it?

It is about a 2' tall twig with lots of new little branches on it, in a 1 gallon plastic pot.