Herbs perennial, rhizomes 0.5-1.5 cm thick, covered by remnant leaf sheaths. The leaves are 15-60 cm long, 1.5-11 mm wide, acuminate to the apex and become nearly filiform, and the base gradually widens to become sheath-like, with many parallel veins, without a clear midrib. Scapes much longer than leaves; racemes usually longer, up to 20-50 cm; bracts small, ovate or oval, apex long and acuminate; flowers pink, lavender to white; perianth strips Shape, 5-10 mm long, with 3 central veins, persistent. Capsule narrowly oval, 8-13 mm long, 5-6 mm wide, with a short beak at the top. Seeds are 7-10 mm long. Flowering and fruiting period June-September.
Highly adaptable, wild on the slopes of sunny hills. Grassland and weeds. The soil is mostly loess and humus. It is cold-resistant and can be overwintered in the field in the north. It likes warmth and is drought-resistant. It must be properly watered during the old seedling stage. It is not advisable to water too much during the growth period, especially during the high temperature period, such as excessive soil moisture, poor growth, and rhizomes. Perishable. The soil is suitable for loose humus soil, low-lying stagnant water and excessive soil are not suitable for planting. Born in drier or sunny places on hillsides, grasslands or roadsides below 1450 meters above sea level.
