Ammonium Sulfate 21-0-0

An economical form of soluble nitrogen for quick greening with high sulfur.

As its name and chemical formula denote, Simplot’s Ammonium Sulfate is a two-in-one fertilizer. Its crystal form, and 21-0-0 analysis are one of agriculture’s most enduring and trusted solid forms of fertilizer.

Ammonium Sulfate 21-0-0
  1. Quick acting form of water soluble nitrogen that stimulates vegetative growth and produces a deep green color.

  2. High sulfur content (24%) to enhance decomposition of thatch through stimulation of soil micro-organisms, improves color and density of turf.

  3. High quality, screened crystalline material.


Total Nitrogen (N)
Available Phosphate (P2O5)
Soluble Potash (K2O)
Sulfur (S)

Directions and Usage

GROUNDCOVER: Broadcast at 5 lbs. per 1,000 sq. ft. (½ lb. per 100 sq. ft.)
SHRUBS & EVERGREENS: Sprinkle ¼ cup evenly around dripline of plant and work into top 1 inch of soil.
TREES: Apply ½ lb. per 1 inch of trunk diameter. Distribute evenly under branches out to dripline.