Switchgrass (Panicum virgatum) is a tall, warm-season, perennial, bunch grass, that reaches heights of 3 to 5 feet tall. It reproduces from seed and rhizomes, and has a vigorous root system. It produces large seeds on a spangled-type seed head. The stem is round, hollow, and usually has a reddish tint. Switchgrass is easily identfied by a small nest of hair where the blades attach to the sheath. Switchgrass is winter-hardy and drought-resistant, making it adaptable to a wide range of soils and climatic conditions. It is best adapted to moist lowland soils, or heavier soils having a high water table. Switchgrass is found throughout the Bluestem belt of the United States. Switchgrass is used for pasture and makes a good quality hay, when mowed at the time the seed heads start to appear. It should not be grazed closer than 5 to 7 inches during the growing season. The seed can be harvested with a combine, and is usually seeded in mixtures with Bluestem, Indiangrass, and Sideoats Grama.