"And we began to till the ground, yea, even with all manner of seeds, with seeds of corn, and of wheat, and of barley, and with neas, and with sheum, and with seeds of all manner of fruits; and we did begin to multiply and prosper in the land." (Mosiah 9:9)

Little Barley(Hordeum pusillum) is a species of barley that is indigenous to the Americas, and that was widely used as a grain crop by Native Americans.

Corn was also widely used as a grain crop by Native Americans.