Ophiopogon japonicus, commonly called mondo grass, is an evergreen, tuberous-rooted, rhizomatous, perennial of the lily family. It typically forms an arching clump to 8-12” tall and as wide or narrow, linear, grass-like, dark green leaves (each leaf to 8-15” long and 3/16” wide).
Foliage is similar to that of Liriope (also in the lily family), but leaves are narrower and more refined. Small, 6-tepals, bell-shaped, white to lilac-tinted flowers (1/4” wide) bloom in summer in short racemes (2-3” long) atop leafless stalks.
Flowers are followed by spherical, pea-sized, blue-black berries (1/4” across). Flowers and fruits are usually partially hidden by the foliage. This plant is ornamentally grown for its tufts of grass-like leaves.
Planting & Caring –
Best grown in rich, fertile, humusy, slightly acidic, moist but well-drained soils in part shade to full shade. Prefers consistent and even moisture in soils that do not dry out.