You know it by the distinct Yellow Bottles. Agricultural Organics out of Australia has created one of the most popular boutique nutrient lines on the market today. Bloom Yellow Bottle Nutrients offers a complete line of nutrients and additives that will make any garden explode with high yields and happy plants. Bloom Grow A 1 liter is part of a two part grow and flower nutrient that is easy to use and pH stabilized. The Yellow Bottles will give you unparalleled results in the recognizable yellow bottle! Grow A and B is the vegetative base nutrient of the line, offering plants everything they need to exhibit rapid vegetative growth with healthy stems and leaves. These concentrated two part bases are mixed in water then fed to the plant for root zone uptake.