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Agricultural Gypsum is mined Calcium Sulfate, rich in Calcium and Sulfur. It is used as a soil conditioner to correct Calcium and Sulfur deficiencies as well as to improve and remediate soil.

INGREDIENTS: Agricultural Gypsum.


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Guaranteed analysis

Calcium (Ca): 2.0%

Sulfur (S): 15%


This product complies with Canadian certified organic crop production standards. Contact us for organic compliance documentation.


Gently mix into top 5cm (2”) of soil.

In the garden: Up to 20kg per 100m2 (44lbs per 1000ft2). Apply up to once per year.

Top dressing: 15-30ml (1-2tbsp) per plant, or 15ml per 4L (1tbsp per gal) of soil, once per year.

Premixing soil: 15ml per 4L (1tbsp per gal) of soil. For larger volume soil mixing add up to 2kg (4.4lbs) per cubic yard of soil.

Weight to volume conversion: Gypsum has a specific gravity of approximately 0.94.

Volume Weight (g)
Tablespoon (15ml) 14
Cup (236ml) 222
Litre 940