Perennial leguminous plants, such as clover, are famous for their drought resistance, cold resistance and heat resistance and soil improvement. Widely cultivated, mainly used for hay, silage or pasture.

The plant is 30 ~ 90 cm high and has many branches. Many stems are born from the roots and necks buried in the soil surface, and there are many compound leaves with three leaflets on the stems. Its long taproot can be as deep as 15 meters, so alfalfa has strong tolerance to drought. Alfalfa stems and branches can quickly regenerate a large number of new stems after harvesting, so hay can be harvested as much as 13 times in each growing season. Alfalfa hay is rich in nutrition and deeply loved by livestock. It contains high protein, minerals and vitamins.