https://plantvillage.psu.edu/topics/sorghum/infos
Sorghum, Sorghum bicolor, is an annual or perennial grass in the family Poaceae grown primarily for its grain. Sorghum has an erect solid stem with one or more tillers (additional shoot that grows subsequent to the parent shoot) and curving leaves which are arranged alternately on the stems and are lance-like in shape, measuring 30–135 cm (12–53 in) in length. The inflorescence of the plant consists of racemes of spikelets arranged on branches at the head of the plant. The spikelets are paired and have 2 florets. When the plant flowers, yellow anthers begin to appear on the head. Sorghum is usually grown as an annual, harvested after one growing season and can grow to a height of 4 m (13 ft). Sorghum may also be referred to as broomcorn and may have been cultivated from wild ancestors in Ethiopia.