The brome genus is a large family of varied grasses. Some do better as hay, others do better for pasture.  Some species are extremely winter-hardy and persistent. Others exhibit an indeterminate seeding habit and persist through frequently dropped seed. Bromegrasses require high fertility levels and well-drained soils. Bromegrasses, in general, do well when planted as a companion with alfalfa.  They are very palatable to all types of livestock because of its large, soft leaves.