An old-fashioned woodland-garden perennial from East Asia (Siberia, Japan, northern China, and Korea) grown for arching sprays of nodding, puffy, heart-shaped rose-pink flowers, each with a protruding white inner petal that gives the "bleeding heart" its name. Blooms in spring in part-to-full shade above ferny blue-green foliage, then goes summer-dormant — best interplanted with hostas and ferns that fill the gap. All parts are poisonous if eaten, and the foliage can cause skin dermatitis.