I've grown it a couple of times. Here's a link with some information about growing your own.

http://www.theepicentre.com/Spices/ginger3.html

I've never made it to the point of overwintering it as I always end up using it all. Planting rhisomes from the store outside in spring is an excellent way to have fresh ginger available all summer long.

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Terry

May the force be with you