Sigma Bio 4-4-4 25 Lb

A balanced formula containing all the macronutrients plants need all season long. Formulated for organic use/farming, this premium-grade granular fertilizer contains nutrient-rich ingredients infused with value-added biologicals. Proprietary GranCORE Technology combines humic acid and essential nutrients such as NPK, Ca, and Fe into a slow-release and easy-to-spread granule. Our large grade size is an excellent choice for organic vegetable crop input.