Cutting Edge Bloom is a supplement designed specifically for plants in their flowering stage. Bloom is a highly effective phosphorus heavy formula that will enhance your plants' flower production. Another important ingredient is the potassium. Potassium will enhance the plant's photosynthetic rate and energy transfer. Bloom also contains lower amounts of magnesium and sulfur, to help satisfy a plant's needs and encourage the plant to shift it's hormonal signals from vegetative to flowering. Cutting Edge Bloom has everything you need to increase flower production! Quantity: 2.5 Gallon. Additional Quantities Available.