The alfalfa plant is primarily native to Asia, and is considered to be one of the first known herbs to mankind. It is a member of the Pea family Fabaceae and it is often used for feeding animals as it has the highest nutritional value of all the hay/forage crops.
Alfalfa(Medicago sativa)also called Lucerne, is naturally high in many essential vitamins and minerals, including A, D, E, K, and even the full family of B vitamins; biotin, calcium, folic acid, iron, magnesium, potassium and many others, as well as being very high in protein, especially when dried. It is "The king of all foods"