Tropicals & Tender Perennials: Overwintering help with Hedychium coronarium, 1 by Equilibrium

Equilibrium wrote:
I received three Hedychium coronarium as a gift. I have them all planted up in Pro-Mix. They are just now all beginning to show growth which thrills me to no end. I really like these plants. The issue is that I am in zone 5 and although they will grow fine here outside for the next few months, I am going to have to do something with them come fall when the temps start dipping. I noticed they can handle zone 7-11. Should I simply bring them in the house and cut back on the water and let them die back and enter a dormancy? Other suggestions? I'd really like to keep these plants going from year to year somehow.

Below is a photo of one of my White Butterfly Gingers that is shooting up new growth from the rhizomes. I don't keep the medium that wet but it had just rained when I took the photo-