apanese sedge—also known as Morrow's sedge or evergold carex—is a semi-deciduous rhizomatous evergreen native to Central and Southern Japan. It forms a densely tufted tussock of slender foliage that shimmers in the breeze, with flat, dark green leaves that are 12 inches long and 1/4- to 1/2-inch wide.
Best planted in spring, the growth habit of Japanese sedge is dense, clumping, and mounding. The plant will grow at a moderate pace, reaching its mature height and spread within about two years' time. Inconspicuous brown flowering spikes emerge on the plant in mid to late spring.