Use white clover of some type in grazing mixtures with grasses for horses where possible. White clover is hard to get uniformly dry for horse hay and should be used primarily for grazing. An increasing amount of red clover is being used for cattle grazing. Sometimes working horses grazing lush red clover in the spring may slobber or froth at the mouth. Sometimes red clover is grown as an annual in mixtures with the above winter annual grasses and legumes.
Horses eagerly graze and do well on any of the winter annuals.
They particularly prefer the clovers grown with the grasses. These legumes are higher in certain mineral elements than the grasses and supply a better balance of forage-containing minerals in the animal's diet. Forage legumes supply their own nitrogen and nitrogen for the grass growing with them. They reduce fertilizer cost in addition to improving forage quality. Any of these can be obtained from your county Extension office.