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The Andersons Black Gypsum DG

Price $33.99
In Store Purchase Only
Store Pickup Only
The Andersons Inc.

Black Gypsum DG 

Black Gypsum DG is a dry, dispersing granular product, and is composed of 70% gypsum and 30% humate. In addition to generous amounts of calcium (12%) and sulfur (8.9%), Black Gypsum DG delivers 21% humic acid in every application.


  • First, our gypsum source is calcium sulfate di-hydrate (CaSO4·2H2O), which is more water soluble than the anhydrite form (CaSO4) because it has two extra water molecules. These extra molecules make calcium and sulfur more quickly available to the plant – as soon as Black Gypsum DG enters the soil solution.
  • Along with the dispersing granule technology and the di-hydrate form of calcium, a plant receiving a Black Gypsum DG application can begin utilizing the nutrients in hours, rather than in days or weeks, as with the the anhydrite form.
  • The quick-acting humate found in Black Gypsum DG provides further chelating of applied and existing nutrients, increasing their availability to the plant.
  • Applying gypsum and humate jointly also helps to improve soil structure.

50lb bag

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WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. For more information, go to