Fast-Acting Green-Up & Growth – DARK MATTER 21-0-0 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. Ultra-Fine Prill for Even Coverage & Quick Absorption – Designed for smooth spreader application and is trusted by professionals for superior results. Premium Turf, Garden & Landscape Fertilizer – Fast-Acting, Deep Green Formula Get the Ultimate Lawn & Garden Boost with DARK MATTER 21-0-0 Transform your lawn, garden, and landscape with DARK MATTER 21-0-0 Ammonium Sulfate, a high-performance nitrogen fertilizer designed to rapidly green up turf, nourish plants, and promote strong, healthy growth. Unlike standard ammonium sulfate, this premium-grade formula delivers an intense, long-lasting deep green without streaking or burning.
Perfect for lawns, vegetable gardens, flower beds, shrubs, trees, and ornamental plants, this small-prill fertilizer ensures even coverage and quick absorption, giving your entire landscape professional-grade results. Whether you're growing lush grass, vibrant flowers, or nutrient-rich vegetables, DARK MATTER delivers the essential nitrogen and sulfur needed for strong root development, vigorous foliage, and enhanced plant health.
Why Choose DARK MATTER?
✔ Fast-Acting, Long-Lasting Green-Up – High-quality ammonium sulfate delivers instant nitrogen to fuel rapid growth and vibrant color.
✔ Ultra-Fine Prill for Maximum Coverage – Ensures even distribution and consistent results with every application.
✔ Versatile Use – Perfect for lawns, vegetable gardens, flower beds, shrubs, trees, and ornamental plants.
Application Instructions
Lawn Application
Rate: 3-4 lbs per 1,000 sq. ft.
Frequency: Apply every 3-4 weeks or as needed.
Watering: Water immediately after application for best results.
⚠ Avoid Application if heavy rain is expected within 24 hours.
Application Rates for Gardens & Ornamental Plants
🌿 Vegetable Gardens & Flower Beds
Rate: 0.5 - 1 lb per 100 sq. ft.
Frequency: Every 3-4 weeks or as needed
Application: Evenly spread and lightly work into the top 1-2 inches of soil, then water thoroughly
🌳 Shrubs & Trees
Rate: 0.5 - 1 lb per inch of trunk diameter (applied around the drip line)
Frequency: 2-3 times per growing season
Application: Apply evenly under the canopy, keeping 6 inches away from the trunk
🌱 Potted Plants & Container Gardens
Rate: 1 teaspoon per gallon of soil
Frequency: Every 3-4 weeks
Application: Mix into the topsoil and water immediately
✅ Best for nitrogen-loving plants like leafy greens (lettuce, kale, spinach), corn,
tomatoes, and ornamental shrubs.
⚠ Avoid excessive use in fruiting plants during flowering, as too much nitrogen can promote foliage growth over fruit production.
Storage & Warnings
⚠ May cause skin and eye irritation – Use gloves, eye protection, and a dust mask when handling.
⚠ Iron content may stain concrete, sidewalks, and driveways – Sweep any spills immediately.
⚠ Keep out of reach of children and pets.
State Restrictions
❌ Not labeled for lawn use in: Florida, New Jersey, Maryland, Vermont, and New Hampshire. Approved for agricultural, ornamental, garden, and non-lawn landscape use where permitted. Always check local fertilizer regulations before application.
