ALFALFA SEED (MEDICAGO SATIVA) Common Names: Alfalfa, Lucerne, Luzerne Alfalfa is a perennial herbaceous legume. Due to its high nutritional quality, high yields and high adaptability, A major source of protein for livestock, Alfalfa is mainly used as animal fodder. It is usually cultivated for hay. Alfalfa living from three to five years, depending on variety and climate.