Fox Farm Tiger Bloom Liquid Fertilizer (2-8-4) works fast to encourage blooming in plants by providing high levels of phosphorus and important trace minerals. It also contains nitrogen to help maintain green growth while encouraging larger, brighter flowers. Use at the first signs of flowering through harvest to increase yields. This is a complete, organic-based liquid plant food blended from earthworm castings and kelp. Works great with both hydroponics and soil or as a foliar spray.