Sudan grass (scientific name:Sorghum sudanense (Piper) Stapf. is an annual herb in the Poaceae family, belonging to the Sorghum genus; with robust fibrous roots. The stems are relatively thin, reaching up to 2.5 meters in height, with the basal sheaths longer than the internodes, and the upper ones shorter than the internodes. The ligule is hard and leathery, with a brownish color.LeafLinear or linear-lanceolate, gradually narrowing and acute to the apex, narrowing below the middle, with a convex back, glabrous on both sides. Inflorescence is narrow-ovate to pyramidal, rather loose, with a ridged rachis, anthers are elongate-ovate, and the style's stigma is brush-like. Caryopsis is elliptic to inversely ovate-elliptic, flowering and fruiting from July to September.