Down To Earth Oyster Shell


Down To Earth Oyster Shell is an all-natural source of high-quality calcium, an essential plant nutrient that is used to increase plant metabolic function, build stronger cell walls, protect from heat stress, and acts as a preventative measure against the spread of plant disease. Calcium Carbonate from ancient oyster shells are harvested, to provide plants with a sustained release of calcium. Available in a 1-pound box. Looking for other Down to Earth amendments? Head to Sativa Remedy Grow Center to see our full line of Down To Earth products.

This item is only available for local pickup at the Sativa Remedy Grow Center.

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Down To Earth Oyster Shell, produced by grinding ancient oyster shells into coarse particles that are small-to-medium in size, leading to a sustained release of calcium, aiding in preventing calcium deficiencies while improving soil structure. Oyster shell is a natural source of calcium carbonate, commonly used to make the plant hardier and more resistant to environmental stressors and prevent the spread of disease. Oyster shell may mildly increase the soil pH over time.

Usage Instructions:

Containers: For new plantings, add 1-2 tbsp per gallon of soil and mix thoroughly, OR add 2.50.5-1 lb per cubic yard. For established plants, lightly mix 1-2 tbsp per gallon of soil into the soil surface every other month during the grow season.

Derived From: 

  • Ground Oyster Shell

Guaranteed Analysis: 

Calcium 35.0%

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