Carex oshimensis, the Japanese sedge (a name it shares with Carex morrowii), is a species of flowering plant in the genus Carex, native to Japan.

[2] With its striped foliage, it is widely used as a non‑spreading ground cover.

Its cultivar 'Evergold' has gained the Royal Horticultural Society's Award of Garden Merit.

[3] Growing to 50 cm (20 in) tall and broad, it has a broad yellow stripe down the centre of each leaf.

It is an easy subject for moist soils in sun or partial shade.