Reach the full genetic potential of your crops with Emerald Harvest® Cali Pro® Grow A & B and Cali Pro® Bloom A & B, our complete 2-part base nutrient series. Cali Pro® is a nitrogen-rich fertilizer that nourishes your high-yield, indoor-grown crops with the essential elements they need to develop strong stalks and stems and support a robust harvest. Rich in phosphorus, potassium and other essential plant nutrients needed for vigorous fruiting and flowering, Cali Pro® also contains trace elements such as chelated iron, cobalt, manganese and zinc. Use Cali Pro® Bloom A & B during flowering.