Grow Spray is a power packed nutrient spray to be applied to a plant's leaves prior to flowers or fruit. It can be used in soil or hydroponic systems and alongside other nutrient products. Grow Spray is a great tool. Though it is important to water plants with nutrients, Grow Spray can be as much as 20 times as effective. Grow Spray will produce larger, greener leaves and large fruit or flowers. Easy to use, Grow Spray has all the right ingredients in one bottle.