Duke of Windsor is quickly moving up the list of my favorite cultivars. I think I got lucky planting this one in the right location in my garden. Morning sunlight, then diffused light the rest of the day. This one really caught Kip's eye on his recent visit. Got this from Marie Nock. She may have some more. If you don't have Duke of Windsor, I would suggest this to be a good canidate for your next acquisitions.