Target Specialty Products 18-24-12 Slow Release Fertilizer with NutriLife, 50 lb. is designed to provide a quick and lasting green-up while enhancing nutrient availability and promoting deeper, healthier roots. This versatile fertilizer is suitable for year-round use to maintain a vibrant green color, prevent disease, and support strong root growth. For optimal results, it is to apply this fertilizer in late fall, between October 5 and November 15, to nourish your lawn through the colder months, ensuring it emerges greener and healthier in the spring. Model Number: