Japanese sedge ornamental grass

Evergold Variegated Japanese Sedge

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Species: oshimensis

Other Species Names: C. hachijoensis

Plant Height: 8 in.

Spread: 12 in.

Evergreen: Yes

Plant Form: arching

Summer Foliage Color: cream

Minimum Sunlight: shade

Maximum Sunlight: full sun

Ornamental Features

Evergold Variegated Japanese Sedge’s attractive grassy leaves are creamy white in color with distinctive dark green edges. The foliage often turns brown in fall. Neither the flowers nor the fruit are ornamentally significant.

Landscape Attributes

Evergold Variegated Japanese Sedge is an herbaceous evergreen perennial grass with a shapely form and gracefully arching stems. It brings an extremely fine and delicate texture to the garden composition and should be used to full effect. This is a relatively low maintenance plant, and is best cleaned up in early spring before it resumes active growth for the season. It has no significant negative characteristics. Evergold Variegated Japanese Sedge is recommended for the following landscape applications; Mass Planting Border Edging General Garden Use Groundcover Naturalizing And Woodland Gardens Container Planting

Planting & Growing

Evergold Variegated Japanese Sedge will grow to be about 8 inches tall at maturity, with a spread of 12 inches. Its foliage tends to remain low and dense right to the ground. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 10 years. This plant performs well in both full sun and full shade. It is quite adaptable, prefering to grow in average to wet conditions, and will even tolerate some standing water. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. Consider applying a thick mulch around the root zone in both summer and winter to conserve soil moisture and protect it in exposed locations or colder microclimates. This is a selected variety of a species not originally from North America. It can be propagated by division; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation. Evergold Variegated Japanese Sedge is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. It is often used as a ‘filler’ in the ‘spiller-thriller-filler’ container combination, providing a canvas of foliage against which the thriller plants stand out. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

Carex oshimensis ‘Evergold’ (Variegated Japanese Sedge) – A clumping forming evergreen sedge to 12 to16 inches tall by about 20 inches wide with arching narrow leaves that have a creamy yellow central stripe and dark green margins. In later winter appear the brownish insignificant flowers that rise not much above the foliage before arching downward and are best trimmed off with an annual cut back of the plant in spring. Plant in part cool sun to light shade and irrigate regularly to occasionally, allowing the soil to dry slightly between watering – surprisingly drought tolerant for a sedge. Cold hardy to about 0 degrees F. It is very striking as an accent plant or ground cover, in rock gardens and in mass plantings in a morning sun or bright shady location. Also useful on the edge of the water garden but dislikes complete submersion. It is on lists as resistant to predation by deer. This sedge, first described in 1914 by the Japanese botanist Takenoshin Nakai, is native to dry forested areas and rocky slopes at mid elevations on the main island of Honshu in Japan. There has been much confusion surrounding the cultivar and numerous names have been applied to it. We originally grew this plant as Carex morrowii ‘Old Gold’ starting in 1987 and later as Carex morrowii ‘Aureo-variegata’ . Carex morrowii is a valid name for a sedge that also grows in Japan but following the treatment in Rick Darke’s book, “The Color Encyclopedia of Ornamental Grasses” and the New Ornamentals Society listing on Carex, we corrected the name we use for this plant to Carex oshimensis ‘Evergold’ in our 2004 catalog. We also grow the white-margined cultivar Carex oshimensis Everest. The information on this page is based on research conducted in our nursery library and from online sources as well as from observations made of this plant as it grows in our nursery, in the nursery’s garden and in other gardens that we have observed it in. We also will incorporate comments received from others and always appreciate getting feedback of any kind from those who have additional information, particularly if this information is contrary to what we have written or includes additional cultural tips that might aid others in growing Carex oshimensis ‘Evergold’.

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