FoxFarm's special, micro-brewed formula incorporates earthworm castings, bat guano and other high test organic ingredients that offer a full range of nutrients. Norwegian kelp improves nutrient uptake and increases yields. Rock phosphate helps transfer energy from one part of the plant to another, which means bigger buds and more fragrant flowers. Best of all, Big Bloom(R) will intensify flower fragrance, and it will increase essential oil production, which means stronger flavors in herbs, fruits, and vegetables. Use Big Bloom(R) to extend your fruit and flowering season late into the year. And when a plant is struggling, a root drench of Big Bloom(R) will help to perk things up. | FoxFarm Big Bloom Natural & Organic Blossom Builder 0.01-0.3-0.7 | Size 16 oz