Do you have a bright sunny window? I had a couple of cannas last year that didn't grow much, so I overwintered inside. They didn't grow a lot, or bloom, but they survived fine. I was just worried they didn't have enough healthy tuber to survive winter storage. I have 4 cannas I received in trade late in the season I will probably winter over that way. I think Cleopatra has such nice foliage it would make a nice houseplant.