Grow Big Liquid ConcentrateGrow Big The Right Juice for the Right Use! Get your garden going with Grow Big, FoxFarm's fast acting, water soluble fertilizer for lush, vegetative, compact growth. Use Grow Big early in the season when young plants need an extra boost. FoxFarm adds earthworm castings and Norwegian kelp into this special brew to encourage sturdier, healthier stems and leaves, but they also provide enough nutrients and trace minerals to create the kind of healthy