Beard grass, also known as Andropogon gerardii, is a species of grass that is native to North America. There are several synonyms for this plant, which include big blue stem, turkey foot grass and tall bluestem. These synonyms are typically used interchangeably depending on the region or culture of the individual referring to the plant. This species of grass is commonly found in prairies, savannahs, and other open habitats, and is known for its distinctive bluish-grey stems and leaves, as well as its tall, thin seed heads. It is often used for landscaping, erosion control, and as a source of forage for livestock.