Description
Small, clump-forming, deciduous perennial (H 30-40 cm, W 15-25 cm). Leaves grow from a short underground stem; upright, lanceolate (up to 30 cm), longitudinaly ribbed, dark green. Flowers (3-5 cm), lilac-pink. Flowering period: May-June. It grows well in humus-rich, light, sufficiently drained, always moderately moist soils, protected from hot sun. Needs some winter protection (mulch).