Why Certified Seed Beats Farm-Saved Seed What Seed to Sow? At harvest time, a farmer’s thoughts turn to next year’s crops. What’s foremost in his mind is the question of what seed to sow. He knows his farming year starts with seed. But which seed should he take: Seed saved from his own grain harvest or certified seed purchased at a price? It’s a question of fundamental importance for the following year’s harvest.