Sorghastrum secundum, commonly known as lopsided indian grass or wrinkled jointgrass, is a perennial grass native to southeastern United States. It thrives in a variety of habitats including savannas, grasslands, and disturbed areas such as roadsides and fallow fields. This species typically grows rapidly to a height of 1.5-4 feet (0.46-1.2 meters) and is characterized by its tufted habit and erect stems. The flowers of Rottboellia rugosa are green and inconspicuous, blooming in the summer, and are less significant compared to its foliage.

Lopsided Indian grass is valued for its ability to establish quickly in warm climates, making it useful for soil stabilization and as a cover crop in agricultural settings. It is also used in traditional medicine in some cultures. In cultivation, it requires full sun exposure and performs best in medium or fast-draining clay, loam, or sandy soils, with medium water requirements. While it is not typically grown for ornamental purposes, it can be used in naturalistic plantings or as a low-maintenance grass in warm regions. Care should be taken as it can become invasive outside its native range, potentially outcompeting native vegetation.CC BY-SA 4.0