Carbon-complexed with Micro Carbon Technology®, OMRI-Listed and CDFA (California Organic) Registered Fertilgold® Ca is an organic nitrogen-free calcium nutrient. Calcium is a required nutrient for cellular strength and growth, plant vigor, and fruit development. Fertilgold® Ca provides calcium without the nitrogen associated with other calcium products, allowing plants to benefit from calcium nutrition for fruiting without the nitrogen stimulus for vegetative growth. With Micro Carbon Technology® as the delivery mechanism, Fertilgold® Ca moves freely up and down the plant vascular system.