Dark Matter™ 18-0-0 Ammonium Sulfate Fertilizer with 4% Iron | High-Nitrogen Lawn, Garden & Turf Fertilizer | Fast-Acting Small Prill Formula | 40lbs | Covers up to 13,333 sq ft |

Fast-Acting Green-Up & Growth – DARK MATTER 18-0-0 delivers a powerful nitrogen boost for rapid turf, garden, and plant growth, producing deep green lawns, vibrant flowers, and nutrient-rich vegetables. Versatile for Lawns, Gardens & Ornamentals – Ideal for cool- and warm-season grasses, vegetable gardens, flower beds, shrubs, and trees. Perfect for leafy greens, tomatoes, and ornamental plants. 4% Slow-Release Iron for Long-Lasting Color – Unlike standard ammonium sulfate, our formula includes slow-release iron, ensuring a richer, longer-lasting green without streaking or burning. Ultra-Fine Prill for Even Coverage & Quick Absorption – Designed for smooth spreader application and is trusted by professionals for superior results. 20% Sulfur for Soil Health & Nutrient Absorption – Sulfur enhances root development, improves nitrogen efficiency, and strengthens plant resistance, making it a must-have for healthy lawns and gardens.