Probiotic and ProMoisture Hydrate provides lush green growth with thick plant cell walls by feeding plants the perfect diet through a formula that accelerates robust and vigorous vegetative growth. This formula goes to work in the soil with incredible speed because of the purity of the green based Probiotic ingredients. It works quickly, but not so quickly that it could potentially burn plants. Help your plants reach their full potential. Treat them to Dr. Earth Nitro Big for the biggest, tallest and thickest leaves.