I have had this plant in my yard for about 10 years. I have to put plenty of mulch around the roots for it to survive a colder winter. It blooms continuously all summer long. Native short-tongued bumblebees attend it constantly and the occasional long-tongued bumblebees visit as well. It performs extremely well and is a low maintenance clumping plant at the interface of Zone 7B-8A.

Cindy - Arkansas, USA