I was hoping someone knew how early I can harvest flint corn and still have it usable for seed next year. I have a large patch of Longfellow flint corn that has huge beautifully full ears but the raccoons also find it agreeable to knock down the ears, just to sample before moving to the next.
You can harvest at the dough stage and still have germination. If it is gummy when you stick a fingernail in, that's enough. I have not tried earlier than that.