Tough and beautiful You expect a lot from the Happy Face® series of potentilla: hardiness, non-stop blooms, extra-large flowers, and essentially effortless care. Happy Face Hearts ® has proven itself worthy of the line-up, and brings beautiful apple-blossom like flowers, pink with a white-yellow star in the center for an old-fashioned “picotee” effect with modern day performance. Maintains pink coloration even in hot weather. Formerly known as Potentilla fruticosa .