This grower is sure of this plant identification.
excellent low growing ground cover for shade. Forms tidy hummocks. White margins on foliage
Japanese Grass Sedge
Carex morrowii Variegata (Japanese Grass Sedge). The semi-evergreen leaves of this clump-forming sedge have green margins and a wide white stripe down the middle. The arching leaves form a low mound. This plant is also resistant to deer.
Keep moist. Tolerates heavy shade. Leaves can blanch to a dull yellow in very bright sunlight.
Use in shaded areas to add light, movement and colour.