Maiden Grass grows 4-9' h x 3-6' sp and has white blooms in the late summer and early fall.
Photo Credit:
NC State Extension and https://commons.wikimedia.org/wiki/File:Japanese_pampas_grass_%E3%82%B9%E3%82%B9%E3%82%AD%E3%81%AE%E7%A9%82%E6%B3%A2PB080105.jpg#/media/File:Japanese_pampas_grass_ススキの穂波PB080105.jpg