Only corn on market that isn’t hybred is Indian corn (red). We grow very little wheat that’s not hybred. Most tomatoes are also hybred. A few old favorites are still around. Rutgers is my favorite. There are seed exchanges and specialty companies that deal solely with heritage seeds.
Oh, so the red corn is Indian corn? My friend bought heritage seeds for her garden. Unfortunately I haven’t had a place to grow anything in a long time. I grow a few herbs in planters and make my own bean sprouts.