Alfalfa has the most species, mostly wild herbs. There are three main kinds of alfalfa produced in China: the first kind is purple alfalfa, which is about six square inches long, upright, with purple pods and curved beans. The second kind is yellow alfalfa, whose stems are not upright, crawling on the ground, with yellow flowers and leaves like sickles. Both are produced in northern provinces. The third kind is wild alfalfa, commonly known as grass head, also known as cauliflower. The stem lies on the ground, and each slender stem has three leaflets. It is wild and cultivated as food in the lower reaches of the Yangtze River in China.

Alfalfa: It has petite and lovely flowers, and the flower language is' lucky'. Lucky Alfalfa: A rare four-leaf clover, whose flower language is' lucky'.

The other said that the flower language is hope.