The 7 is the pivotal number here. It takes about 7% nitrogen to make a plant jump. This fertilizer will certainly do that and more. Dyna Grow has scored again with this concentrate that makes your plants green and lush without stretching them un naturally. Miracle grow is the dark ages now as the heavy salts, heavy mix, nuking of your plants should cease immediately. Use this every time you water for spectacular results. For awesome results follow up with the bloom formula from Dyna-Grow,and be satisfied.It may be too late now for your sweet corn, but I guarantee you the best crop ever next year if you use this product. Dyna-Grow has the Tomato Man seal of excellence, you can't lose when you purchase this product.