Ken - Doan think so
We can get to 10-20 below zero. January 2014 (relentless with day after day of Highs in single digits and not much snow) trashed many of my "perennial"
) Cannas. They have been in the ground since 2010
FWIW - I have:
Turmeric
Grocery store Ginger
White butterfly ginger
Kahili ginger