Ophiopogon planiscapus 'Nigrescens' - Black Mondo Grass - Liliaceae (The Lily Family)
A choice plant that gradually develops into a drift of near-black evergreen foliage that is green at the base. It always looks fresh. Pale lavender flowers in the summer followed by deep purple-black berries. Unendingly useful for plant combinations in pots, along pathways or in garden beds. Try it with hostas, heucheras, nepetas, geraniums,...anything really! Though make sure to combine it with something that will show off its black foliage otherwise it will disappear against the dark soil.