Hi Ann,
REGENCY HEIGHTS is a diploid. I love the soft coloring also and this plant has great substance. It's by Hazel Dougherty who did some other great diploids like AUTUMN WOOD, INDIAN RIPPLE and STOLEN TREASURE
I love your ORANGE BLOSSOM TRAIL and will have to think about adding that one to my garden sometime if it's hardy up here in NH. Great color combo you have there
