i grew that one several years ago. isn't it 'miss muffett', a small-leaved selection?
i usually tuck a few into various spots in the shady beds among hostas and ferns for a little color, too. i wish i had dug and stored that particular one. it's really pretty.

I had some of those last year (didn't get to them to over-winter). They will take some sun also. I just love the colors.