Humboldt Nutrients 0-10-0 Natural Bloom is an ultra-concentrated natural bloom formula designed to give your plants the large phosphorus and calcium boost needed during the flowering period. Bloom Natural induces a superb flowering response in all plants, encouraging multiple flowering sites. This produces a massive crop, a high quality yield and flavorful fruits. The use of Bloom Natural promotes full flavors, aromas and beautiful bouquets obtained through the use of rich and pure natural ingredients provided by Humboldt Nutrients.