Erodium reichardii Bishop's Form ~ Pink Storksbill (syn Erodium variabile Bishop's Form)
Erodium Bishop's Form or Pink Erodium grows slowly in the rock garden. I also use them in the gaps between stepping stones and in the front border of a controlled perennial border. In more enthusiastic settings it is overrun. The plants stay below 2" and can spread to 10". Erodium X Bishop's Form is hardy to 15° F.