O. planiscapus nigrescens has the appearance of a grass, but it is in fact a member of the Lily family, related to Liriope. Growth is unfortunately slow and though hardy and long lived, it is not happy in poor soils and dry sunny places. Its dark, almost blackseldom fail to appeal and though it in late summer, in the form of 4 inches spikes of little heads, these are not very distinguished. The plain green O. planiscapus is only slightly more vigorous and though both take a year or two to become established, they can in course of time be divided, best in spring.
OPHIOPOGON planiscapus nigrescens