Japanese silvergrass, Chinese silvergrass, susuki (in Japan), miscanthus, often regionally called pampas grass, Japanese pampas grass, wild sugar cane (in Taiwan).
Miscanthus sinensis has showy flowers composed of many small individual flowers, or spikelets. Extending from the spikelet is a needle-like awn; surrounding the spikelet are many hairs, beige, red, or pink in color; these hairs are about the same length as the spikelet.
Miscanthus sinensis is a bunch or caespitose grass, it does NOT have rhizomes and forms a large clump. Many ornamental forms or cultivars of this species are grown in gardens and used for landscaping. These ornamental forms are not considered to be invasive in most garden settings. See the link above for further information.