A long lived clumpy perennial with coarse rhizomes. It grows 4 to 7 feet tall. It is used for pasture, silage, hay and erosion control. This very versatile grass is also excellent for stabilizing waterways, healing and controlling gullies and protecting shorelines of ponds and reservoirs from wave action. It flowers from June through July. It grows best under cool, moist conditions, but is adapted to a wide variety of soil moisture conditions including nontidal marches, stream banks, lake shores, moist woods, and fresh tidal marches.