Future Harvest Bloom Bloom is the flowering-stage bottle in Future Harvest's complete 3-part feed, alongside Grow and Micro. As with any Grow/Micro/Bloom system, you shift the ratio between the three bottles as your plant moves from vegetative growth into flower — Bloom's share of the mix increases through flowering to support bud development, while Grow's share tapers off. It's still a complete, standalone formula in its own right, with all of Future Harvest's core features: Key Features: Automatically buffers pH to acceptable levels for plant growth. 100% sediment free (i.e. no precipitation of nutrient salts out of solution and becoming unavailable to plants). Works well for novices and experts alike — easy to use, with the three-part formula giving precise control over feeding schedules. Extremely low salt index and only the finest raw materials used. Change the ratio between the three bottles to control nutrition for each specific stage of plant growth, as a professional grower would do. See the Future Harvest feed chart for the exact Grow/Micro/Bloom ratio by week of growth.