All of our corn (except popcorn – see below) has been hand-pollinated to ensure purity and prevent potential contamination from nearby GMO corn. Save seed from at least 200 plants to ensure a genetically vigorous population and prevent inbreeding depression. We recommend isolating your corn from other corn types or hand-pollinating to keep your seed stock pure. Packets are one ounce. Ask about being a seed steward in our Non-GMO Corn Preservation Project if you are located in the Pacific Northwest.