I'm in South Carolina and it's done well for me. I love the pattern and the blooms are usually always nice. There was only one day the shape had changed a bit, but that seemed to be the only one. It may have been a change in overnight temperatures.
I really love seeing it and it's very photogenic! I'm not certain I tried setting seeds or using the pollen, I'd have to find my notebook as it's been temporarily misplaced!
It seems to be only an average increaser, so far. I've had it going on three years.