Step 3 | The Mill 22-0-14 50% SCU 5% Iron Lawn FertilizerStep 3 of The Mill 4 Step Lawn ProgramLate Summer Strength + Color Boost(Apply late summer around Labor Day) Summer stress can thin your lawn and weaken roots. Step 3 is designed to help your grass recover, strengthen, and regain color going into fall. This application focuses on building resilience so your lawn can handle heat, traffic, and dry conditionswhile iron enhances deep green color without excessive growth. Why Youll Love This Strengthens