I've grown 'Willow' for over a decade and it is one dormant that does very well in my heat and humidity. Being it was registered as dormant, I was sure I would lose it after a season or two and I pretty much wrote it off as a loss when the foliage would die to the ground. But it would reappear every year, multiplied, and seemed happy just doing its own thing. (A real anomaly for a dormant on the gulf coast.) It's a pretty, open-faced narrow bloom that's fertile both ways and will always have a spot here.