Hi-Yield Ammonium Sulfate 21-0-0 - 4 lb

Hi-Yield® Ammonium Sulfate 21-0-0 (4 lb) – Fast-Acting Nitrogen Fertilizer for Lawns, Gardens & Blueberries

Give your lawn and garden a quick boost with Hi-Yield Ammonium Sulfate 21-0-0. This fast-release fertilizer supplies 21% nitrogen for rapid greening and vigorous plant growth while also providing sulfur to help acidify alkaline soils. It's an excellent choice for lawns, vegetables, flowers, trees, shrubs, and acid-loving plants such as blueberries, azaleas, and rhododendrons.

Unlike slow-release fertilizers, ammonium sulfate delivers readily available nitrogen that plants can absorb quickly, making it ideal for correcting nitrogen deficiencies and encouraging lush, dark green foliage throughout the growing season. The added sulfur helps improve nutrient availability in high-pH soils while promoting healthier overall plant growth.

Key Features

• Fast-acting 21-0-0 nitrogen fertilizer
• Contains sulfur to help acidify alkaline soils
• Promotes rapid green-up and vigorous growth
• Ideal for lawns, gardens, trees, shrubs, and vegetables
• Preferred nitrogen source for blueberries and other acid-loving plants
• Easy-to-apply granular formula
• Covers up to 1,000 sq. ft. per 4 lb bag

Great For

• Lawns
• Blueberries
• Azaleas
• Rhododendrons
• Trees
• Shrubs
• Vegetable Gardens
• Flower Beds
• Landscape Plants

Benefits

• Produces deep green color quickly
• Encourages vigorous plant growth
• Helps correct nitrogen deficiencies
• Supplies sulfur for improved soil conditions
• Excellent for alkaline soils and acid-loving plants

Application

For flowers and vegetable gardens, apply approximately ½ pound per 100 square feet. Water thoroughly after application to activate the fertilizer and reduce the risk of plant burn. Always follow the product label for recommended application rates and timing.