About this item

• Down to Earth Oyster Shell is a one pound box of all natural fertilizer and is listed by the Organic Materials Review Institute (OMRI) for use in organic production
• All-natural and high-quality source of the essential plant nutrient calcium, helping prevent calcium deficiencies that can dimish plant development
• Ancient oyster shells are carefully harvested and then ground into small, medium and coarse particles, providing a sustained release of this valuable nutrient
• With 35% calcium, Oyster Shell is great for use on lawns, outdoor containers, vegetable gardens, flower beds, trees, shrubs and row crops/acreage
• Calcium is very important to the biological processes of growing plants and aids in improving structure of soils and building optimum tilth