Trifolium pratense Cool season legume cover crop.
Actually a short-lived perennial with strong re-seeding ability. Often interseeded with grains and irrigated to make a honey and seed crop after grain harvest.
NOTE to Certified Organic Growers: This is conventional seed, but all seeds are coated with Nitro-Coat Organic, which is an OMRI listed coating. This coating uses all organic ingredients: the proper rhizobacteria, a Calcium Carbonate coating that is naturally water absorbing to speed seed germination, and an OMRI listed organic adhesive.