Where annual sorghum is dominant, it indicates fair to poor pasture condition in most pastures. Annual sorghum is usually considered an intermediate species. It is initially an increaser when pastoral condition deteriorates but may decrease under very heavy grazing pressure.
Annual sorghum is palatable to livestock when it is young, but becomes unpalatable when it is mature and has very little bulk.
Various loamy, sandy and rocky soils.
Annual sorghum is a slender, erect annual grass growing up to 3m tall (depending on soil and rainfall). The leaf blades are blue-green, flat and up to 30cm long. The seed head is a light brown single spike 10–40cm long. It flowers from February to May.