Buckwheat is a kind of buckwheat, buckwheat according to the different varieties are divided into black buckwheat and yellow buckwheat. Buckwheat's main growth areas in the Yunnan, Guizhou and Sichuan plateau and Gansu, Shanxi, where the black buckwheat resources are more scarce, only Yunnan, Sichuan, Guizhou, planted around. Their differences are:

1, from the growing environment to distinguish: yellow buckwheat is generally grown at an altitude of 1500 meters above the alpine mountains, black buckwheat is grown at an altitude of 2500 meters above the alpine mountains.

2, from the appearance of the difference: yellow buckwheat buckwheat hulls for yellow-gray, black buckwheat hulls for black. After hulling the difference will become smaller, black buckwheat buckwheat only slightly darker than yellow buckwheat.

2, from the difference in yield: yellow buckwheat yield is higher, generally about 500 pounds per acre, black buckwheat yield is lower, generally about 200 pounds per acre.

3, from the nutritional value of the difference: black buckwheat has a "black pearl", the bioflavonoid rutin content of yellow buckwheat 3 to 5 times, the other nutritive value contained in yellow buckwheat than high.

4, from the price difference: black buckwheat due to its low yield, high nutritional value, so the price is higher than yellow buckwheat.

Combined, black buckwheat buckwheat tea made of buckwheat tea efficacy is naturally better than yellow buckwheat tea efficacy, but also due to the nutritional value and cost and other reasons, black buckwheat tea prices are higher than yellow buckwheat tea prices.