Mother Earth Root Down 3-6-3 is a granular fertilizer designed for young starts and transplants. Bring ?em up right, right from the start with a blended fertilizer designed to encourage vigorous growth and abundant root development in young plants and seedlings. Mother Earth Root Down Plant Starter Mix 3-6-3 is a mix of fertilizers like alfalfa, fish bone meal, kelp meal and more. This blend feeds your plants the primary and secondary nutrients they need to shower you with vegetables, fruits, flowers and herbs later in life. The elevated phosphorus content encourages root growth, which is especially important for delicate young starts and transplants.