Domesticated Einkorn Grain Seeds. Certified Organic by Oregon Tilth. Triticum monococcum. Non-GMO, Heirloom. Widely agreed to be the oldest known wheat, Einkorn is thought to be the first grain ever to feed civilization, dating back as far as 8650 BCE. Einkorn grows in a hull that does not separate from the kernel during harvest, this seed still has the hull on it.