WE SHIP OUT SAME DAY FAST! AMS 21‍-‍0‍-‍0 Ammonium SulfateChoose your lot size at the top page As its name, and chemical formula denote, Simplot’s BEST 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. Use as an economical form of soluble nitrogen for quick greening with high sulfur.Quick acting form of water soluble nitrogen that stimulates vegetative growth and produces a deep green color.High sulfur content (24%) to enhance decomposition of thatch through stimulation of soil micro-organisms, improves color and density of turf.High quality, screened crystalline material. Contains 21% Water Soluble Nitrogen & 24% Sulfur Suitable for Acid Loving Plants- Lawn Fertilizers to Lower pH Levels in Alkaline Soil.A fast release, quick acting source of Nitrogen that supplies rapid growth and greening to all plants and for vigorous dark green color. Supplies Sulphur to aid in acidifying of soils and promote plant health.Water soluble. 3/4 of a pound per 1000 square foot sf is standard for those without soil sample. Adds Sulfur as well as nitrogen. 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. If for any reason our customers are unsatisfied We Guarantee your money back. FREE SHIPPING in the Continental US.We pack carefully and ship same day when possible.