Forage plants are plants that are used as food for animals, such as alfalfa. Alfalfa is a type of forage plant that is widely grown for hay and silage, and is also used as a cover crop and green manure. It is a legume, meaning it has nitrogen-fixing bacteria in its root nodules, which helps to improve soil fertility. Alfalfa is a highly nutritious forage plant, providing protein, vitamins, minerals, and energy for livestock.