The grass is greener with the help of Scotts Green Max Lawn Food. This fertilizer plus iron supplement feeds your lawn and provides deep greening in just 3 days. The product contains 5% iron, a micronutrient that enhances the greening process for fast results. Plus, it is guaranteed not to stain concrete, driveways, or other surfaces surrounding your lawn (when used as directed). Scotts Green Max Lawn Food can be applied to any grass type in the spring, summer, or fall. We recommend using a Scotts spreader to apply this product. For Scotts broadcast/rotary, use a setting of 3 for the recommended rate or 3 for the regular rate. For Scotts drop spreaders, use a setting of 7 for the recommended rate or 7 for the regular rate.