Thanks, Fred. I guess I just assumed all these big edges opened well in the south. Having never been to Florida or other southern places during bloom, I don't have any frame of reference. I have only grown a couple of them here. They have not really been my **thing** -- Shelter Cove always opened flat, even after one night in the 30s. Didn't live through the winter though, unless I took it to a friends greenhouse.
Thanks for answering my question!