Ophiopogon japonicus
A clumping, grass-like evergreen perennial, a lily relative, that forms tufts of narrow, arching dark green leaves and slowly spreads by underground stolons to roughly 6 to 12 inches tall. It tolerates full sun to full shade and prefers moderate water, performing well once established and adapting to a wide range of soils. Short spikes of small lilac to white flowers appear in summer, sometimes followed by blue berries, though the foliage is the main feature. Use it as a durable groundcover and lawn substitute, for edging walkways and beds, mass planting under trees, and erosion control on shaded slopes.