Cutting Edge Grow is a supplement designed specifically for plants in their vegetative state. Grow is highly effective because it adds more nitrogen for growth, and potassium to enhance the plant's photosynthetic rate and energy transfer throughout the plant.. This products is a component of the CES base 3-part, and should only be used in the vegetative stage and should be completely omitted during the blooming stage. Quantity: 2.5 Gallon. Additional Quantities Available.