Miscanthus floridulus – Pacific Island Silvergrass, Tokiwa Susuki

General Information: Pacific Island Silvergrass is an upright, clumping, quick-growing but slow-spreading ornamental grass native to Japan and the Pacific Island region. The rigid stems are often used to make fences, torches, and to build homes. The stems are used in Papua New Guinea for the construction of the outer walls of houses. The plant is also an excellent source of thatching and has been used as livestock fodder. The unopened flower spikes are edible in a similar fashion as the unopened flower heads of Cattails (Typha latifolia). The rhizomes of the plant have been used medicinally in its native range.

Cultivation Details: Growing to 12 feet in a single growing season, these large grass masses, known as tussocks, provide an attractive shelter for wildlife and songbirds. Silvergrass can serve alone as a specimen planting or in groups as a hedge planting. One of its many uses is that it functions in cold climates as a non-spreading alternative to Bamboo, similarly forming a privacy hedge. The feathery inflorescence has a prominent central stalk (rachis), and the blooms are a reddish-tan color. Even in winter, the tall and feathery flowers remain an attractive above-ground feature. Cut foliage to the ground in early spring to give new growth room to develop. An excellent large-size Rain Garden addition – the rhizomes of M. floridulus help to drain saturated sites. Use caution – The edges of the leaves are sharp, so wear gloves when handling.

The plant may reseed in warmer clclimas. Growers in warmer climates (Zones 7 and above) should consider removing flower stalks before maturity.

Growing Requirements: Plant in full sun to part shade. In full sun the grass will grow most upright. In partial shade, the leaves droop significantly, taking up space. Partially shaded plants may require staking. Prefers medium to wet soil. Blooms from August to February, or until a hard frost in cold climates. Low Maintenance. Tolerant of most soil types and conditions provided there is adequate moisture. Very tolerant of extreme summer heat.