Cultivar
'Roseum'
This small herbaceous perennial grows to 600 mm (2 ft) tall by 300 mm (1 ft) wide with mid-green fernlike foliage forming a compact mounded habit. From late spring to early summer it produces dense clusters of pink saucer-shaped flowers above the foliage. It is commonly cultivated in herbaceous borders requiring a semi-shaded to full sun position and a moist fertile soil.