Ready to bloom? FoxFarm Tiger Bloom Plant Food makes it happen. This is an ultra-potent, fast-acting, high-phosphorus fertilizer with just enough nitrogen to sustain healthy, vigorous green growth during flowering. The low pH keeps it stable and ensures that the micro-nutrients will be available when plants need them. In addition to containing critical trace minerals, we brew our liquid fertilizer with earthworm castings and kelp meal for a biologically active formula.