FoxFarm Grow Big Extra Strength Liquid Plant Food 6-4-4 Fox Farm Grow Big Extra Strength Liquid Plant Food provides a fast acting-instant green up. Designed for plants during vegetative growth. Promotes thick, dense structure. Stable and concentrated blend of major and micro nutrients specifically formulated to promote balanced growth. A vegetative food that promotes flowering! Use on all plants, especially vegetables. The perfect house plant fertilizer. Great for lawns too! A little goes a long way. Available in 1 quart size.