The Hostapedia by Mark Zilis (2009), says that this plant falls into a category of "cultivars that exhibit many Tardiana traits but are not a part of Eric Smith's original group." It was originated by Dr. Ralph (Herb) Benedict of Michigan and registered by Rod Kuenster of Iowa in 2010.

'September White' forms a small size (10 inches high by 28 inches wide) mound of medium blue-green foliage. The leaves are lightly cupped, ovate, flat and has glaucous bloom on top. White, tubular flowers bloom from mid-August into September.

Mark Zilis (2009) continues, "Herb Benedict told me...probably descended from 'Dorset Blue' or 'Blue Moon'...In some gardens it has been mistakenly labeled 'White September' and 'Blue September'...it grows very slowly."