Ophiopogon planiscapus 'Nigrescens' is commonly referred to as what?

Ophiopogon planiscapus 'Nigrescens' is commonly known as Black Mondo Grass. This plant is characterized by its dark, almost black leaves, which provide a striking contrast in gardens and landscape settings. Black Mondo Grass is a perennial that grows in a clumping habit, and it is often used as a ground cover or in borders due to its low-maintenance nature and unique coloration.

Its ability to thrive in a variety of conditions, from shade to partial sun, further enhances its appeal for gardeners. Meanwhile, the other options represent different plant species: Japanese Forest Grass is known for its variegated and graceful foliage, Clumping Bamboo refers to a group of bamboo species known for their upright growth habit, and Blue Oat Grass is recognized for its distinctive blue-grey foliage. Each of these plants has a different ecological role and aesthetic appeal, making Black Mondo Grass distinct primarily due to its unique dark coloration.