Buckwheat is grown all over the world. In China, buckwheat is widely distributed in Sichuan, Inner Mongolia, Shanxi, Hubei, Chongqing and other places. Buckwheat is often born in wasteland and roadside. It likes a cool and humid growing environment, is not resistant to high temperature, is suitable for growing in an environment with sufficient sunlight, and needs a lot of water during the growing period. There are two common cultivated buckwheat varieties, one is tartary buckwheat and the other is sweet buckwheat.

Buckwheat: The stem is slender, usually angular, reddish in color, with inconspicuous spots at the base of leaves or no anthocyanins at all. The seeds are basically dark brown or dark brown, and the seeds are heavier. Racemes with umbels on the branches. Flowers are bigger, white, rose or red.