Georgia Gardening: Kaempferia gilbertii - Variegated Peacock Ginger, 1 by sterhill

sterhill wrote:
http://davesgarden.com/pf/go/53340/index.html - I am not sure how to handle these plants as they are for a warmer zone. I have nine of them growing in my shade garden. I got them in a plant trade and only discovered that they are not hardy here. They spring from a little bulb and look a bit like a small hosta.

Do I dig them up now? Wait for the leaves to turn brown as it gets colder? Pull before the first frost? Keep in perlite like dahlias?

Appreciate any info!

Sterling