What is alfalfa good for?
Alfalfa is often fed to horses to give the horse more energy.
However, if fed to a horse, it should be in very, very small
quantities because alfalfa is a legume- not normal grass- and
legumes are very, very rich. Alfalfa will cause stones in the
stomach because of how rich it is, and these stones can kill a
horse when they grow to a large enough size. I avoid alfalfa at all
costs just to be on the safe side, and my horse is fine without
it.