Greenway Biotech Ammonium Sulfate 21-0-0, 24% S, 2 lb – Lowers pH for Acid-Loving Plants

Overview

Greenway Biotech Ammonium Sulfate 21-0-0 is a concentrated water soluble fertilizer that delivers 21 percent nitrogen and 24 percent sulfur in a compact 2 lb bag. The fast dissolving formula makes feeding easy for a range of houseplants, lawns, and garden crops. By blending essential nutrients in a soluble form, it supports rapid uptake through roots and leaves, helping to keep plants looking healthy between watering cycles.

For soils that run alkaline or high pH, this product is designed to help gently lower the pH balance when used as directed. The presence of sulfur contributes to mineral balance in soils where certain nutrients may be less accessible, aligning with other garden inputs and your broader soil care strategy.

Who should consider this fertilizer

This ammonium sulfate option suits gardeners who want a versatile, economical solution for both lawn and garden use. It is noted for suitability with acid loving plants such as azaleas, blueberries, and rhododendrons, as well as general garden plants like shrubs, flowers, and fruit trees. The product is also appropriate for indoor plants when used sparingly and in compliance with label directions.

• 21% water soluble nitrogen supports lush leaf growth
• 24% sulfur supports soil nutrient balance
• 100% water soluble, easy to mix in water or apply to soil
• Ideal for blueberries, azaleas, rhododendrons, and other acid loving plants
• Great for lawns, trees, shrubs, flowers, houseplants and vegetables

Usage ideas and safety notes

• Apply by mixing into topsoil for gradual, steady feeding or dissolve for quicker uptake; always water after application
• Store in a cool, dry place to preserve potency; shelf life is optimized when kept away from moisture
• All batches undergo third party testing; CDFA registration confirms compliance with safety standards for heavy metals

Why it may fit your garden plan

With a California based manufacturing heritage since 1989, Greenway Biotech brings reliable support for home gardeners and professional landscape crews alike. The product blends a straightforward application with professional quality, letting you tailor feeding to your plant pace and seasonal schedule without complicating routines.