Klehm's 'Summer Fragrance' is a big flower, 7", with heavy substance, 28". Last year I had blooms from July 7th to August 14th. I've had it for 4 years and does very well in my northern garden. It started blooming last week. Very early this year. It smells good too.
I gave this flower a shake to get the rain drops off. We've had 4 days of thunderstorms. Not good picture taking weather.