Red bean cultivation is mainly related to varieties. There are 2 varieties of red beans. Annual erect herbs, up to 90cm high. red bean flowering June to July, fruiting July to August. It is widely cultivated throughout China. Mainly produced in China Jilin, Beijing, Tianjin, Hebei, Shaanxi, Shandong, Anhui, Jiangsu, Zhejiang, Jiangxi, Guangdong, Sichuan and other places.

Red beans, also known as: red rice beans. Annual erect herb, 30 to 90 centimeters high. Flowering June to July. Fruiting July to August. Widely cultivated throughout China. Red bean leaves and flowers, seeds, red bean sprouts, can be used for medicinal purposes.

Red bean, also known as: rice red bean. Annual semi-climbing herb. Stem length up to 1.8 meters. Flowering period from May to August, fruiting period from August to September. Cultivated or wild. Mainly distributed in China Guangdong, Guangxi, Jiangxi and Shanghai suburbs and other places.