Armenian Cranesbill - the secret garden flower!

I have been skimming through gardening books looking for something to plant along the borders of my peonies. I have a very narrow bed and want something purple secret-garden like. I have considered Salvia, Cat Mint or Lavender...but those options seem to big for this particular garden bed. Then, I stumbled across some photos of Armenian Cranesbill and I am in love. Look for beautiful they look with peonies. And they flower for a very long time after the peonies have wilted.

via Gardenia.net