Flora Series is the original 3-part Building-Block Nutrient System. It contains all Primary, Secondary and Micronutrients necessary for balanced plant nutrition, enhanced yields and superior crop quality. These nutrients form a complete and balanced fertilizer that provide plants with everything required to successfully build strong plant structures and big blooms. Flora Series is pH buffered. FloraBloom 0-5-4 stimulates flower and fruit development. Enhances flavor, aroma and essential oils. Provides high Phosphorous, Potassium, Magnesium and Sulfur.