(USDA/NRCS) — Indiangrass (Sorghastrum nutans) is a native, warm-season perennial grass that occurs across most of the United States east of the Rocky Mountains. It is commonly found in several ecosystems, including tallgrass prairie, savannahs, and as an understory component in southeastern pine forests across the South. In pine forests, it provides nesting habitat for game birds and songbirds, cover and …