Dr. Earth 100507039 2-1-2 Dr.Earth Premium Alfalfa Meal Fertilizer 3 lb is a fast acting and excellent source of magnesium which roses love. Contains a natural fatty acid growth stimulant called Triacontanol which boosts growth of all plant types. Acts quickly because it decomposes fast. It also contains Superactive soil and seed inoculant and 5 strains of beneficial soil microbes and is infused with TruBiotic which ensures organic nutrients are thoroughly broken down and then released in the soil for plant roots to absorb them as they are needed, contributing to drought tolerance, enhanced nutrient availability and increased plant performance.