Clover hay are legumes. There are five different kinds of clover hay. The white and ladino clover is normally found in pastures. The red, crimson, and alsike are also good, but contain less than 16 percent crude protein. Also, red clover can cause your horse to have an excess of saliva. Clover hay is usually mixed with grass hays. Red Clover is the most common clover hay. Red Clover groves taller than white clover and provides more yield per acre.