pampas grass

C. selloana is a densely tufted, clump-forming, perennial grass, 2.5-3m high and 1.8m or more wide, with evergreen, arching, sharply toothed, blue-green leaves, to 2.5m or more long, and erect stems with pyramidal to oblong plume-like panicles, 45-90cm long, of glistening silver-white spikelets about 15mm long and often flushed with pink or purple, in late summer and early autumn