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Espoma Organic Soil Acidifier is the finest, most effective way to lower soil pH naturally. Formulated from elemental sulfur and gypsum, it turns hydrangeas from pink to blue and helps acid-loving plants like blueberries, azaleas, and rhododendrons thrive.
Long-lasting and safer to handle than aluminum sulfate, it is approved for organic gardening and made in Espoma's solar-powered facility with no sludges or fillers.
Key Benefits
Turns hydrangeas from pink to blue
The finest, most effective way to lower soil pH
Long-lasting, fast-acting source of sulfur
Safer than aluminum sulfate, with twice the coverage
Approved for organic gardening
Safe for people, pets, and the planet
Guaranteed Analysis
Sulfur (S), Min. 30%
Free Sulfur, Min. 18%
Combined Sulfur, Min. 12%
Ingredients
Derived from elemental sulfur and gypsum.
Products are made regionally and ingredients may vary. Always refer to the product tag, label, or packaging for the most accurate and complete ingredients list.
Directions for Use
One pound equals approximately 2 cups.
Hydrangeas & Blueberries: Apply in spring to lower soil pH. Use 1-1/4 cups per new plant or 2-1/2 cups per established plant. Spread evenly around the plant out to the drip line and water well. Repeat every 60 days until the desired pH or bloom color is achieved.
Broadcast rate: Apply 12 lb. per 100 sq. ft. for each one-point reduction in soil pH desired (15 lb. for heavy clay soils). Reduce pH gradually - a dramatic drop can stress plants.
Potted plants: Add 1 tbsp. for every 4 in. of pot diameter.
Net weight: 30 lb. Broadcast rate covers approx. 250 sq. ft. per one-point pH reduction (12 lb. per 100 sq. ft.).
