Solanum nigrum (common name): Wild Tiger (Suzhou, Jiangsu); Wild sea pepper (Pingshan, Nanchuan, Sichuan); Small bitter vegetables (Huidong, Sichuan); Shihaijiao (Nanchuan, Sichuan); Yesanzi (Chengkou, Sichuan); Heitiantian (Shandong); Wild Cape (Yanbian, Sichuan); Denglong grass (Badong, Hubei); Mountain pepper (Neiqiu, Hebei); Wild eggplant seedlings (Mengzi, Yunnan).

Panicum miliaceum, the whole grass is 30-120cm high; Stems erect and multi-branched; Oval or heart-shaped leaves alternate, nearly entire; Small white flowers bloom in summer, and 4-10 flowers form cymes; Spherical berries, dark purple when ripe. Berries and leaves are edible, but leaves contain a lot of alkaloids, which must be cooked before detoxification.

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China is distributed almost all over the country. Happy to be born near fields, wasteland and villages. Widely distributed in temperate to tropical regions of Europe, Asia and America.

The suitable temperature for growth is 22-30℃, and the suitable temperature for flowering and fruiting period is 15-20℃, at which the seed setting rate is high. The requirements for soil are not strict, and it grows well in loam with rich organic matter and strong water and fertility conservation, but lacks organic matter and poor ventilation. The root system is underdeveloped, the plant growth is weak and the commercialization is poor, and the suitable soil pH value is 5.5-6.5.

It is difficult to grow in the high temperature and high humidity open field in summer and autumn, and it is slow to grow in winter and spring when planted in the open field. The tender shoots are prone to fiber aging and poor in commercialization. Therefore, in order to meet the market demand, they can be cultivated in protected fields all year round.