Non-treated seeds are normal standard seeds that have been harvested, cleaned, and dried. Treated sees are processed the same way, but go through an additional step that involves the seed being coated with a bright colored sulfur based fungicide. This prevents disease on the seeds and also keeps the plant healthier as it grows. Plants grown from treated seeds are safe for consumption, safe for beneficial insects, and pollinators. Since they are coated with a fungicide, they can disrupt both good and bad fungus in the soil. The soil will rebalance after the growing season has ended.