Help prevent calcium deficiencies that can diminish plant development
Down To Earth’s Oyster Shell is an all-natural and high-quality source of the essential plant nutrient calcium. Ancient oyster shells are carefully harvested and then ground into small, medium and coarse particles. These irregular shapes provide a sustained release of this valuable nutrient. DTE Oyster Shell also aids in improving structure of soils and building optimum tilth.
CALCIUM (Ca) 35.0%
Ground Oyster Shell
Listed by the Organic Materials Review Institute for use in organic production.