Hi-Yield Triple Super Phosphate 0-45-0 is a specially formulated fertilizer which helps promote vigorous plant root growth. It provides a concentrated form of Super Phosphate to help develop a stronger root system to produce more abundant fruits, healthier bud set, and more beautiful blooms. It is also guaranteed more economical compared to regular super phosphate, making it more efficient and cost-effective to use. Ideal for vegetables, flowers, shrubs, shade and fruit trees. A 4 lb. bag covers up to 200 sq. ft.