I would love to try this too. Such gorgeous blooms!
So many plants that are only root-hardy here do not get enough attention as garden plants. Having started my gardening in OH, it's fine with me that many plants disappear between the frosts. When everything dies down after a frost, it's so easy to deal with oak, dewberry, smilax, and other seedlings that I did not even see when the "good" plants were growing - and they don't get too big to move around or try to take over.