From Dyna-Gro:
"Mag-Pro™ 2-15-4 is a unique supplement that can be used with any complete nutrition formula as a blossom booster to help initiate flowering. The high phosphorus, magnesium and sulfur content of Mag-Pro™ brings out color, fragrance, and size in flowers, fruit and many vegetable crops. Growers using reverse osmosis, rain or deionized water will benefit from the addition of Mag-Pro™ to their watering schedule. Mag-Pro™ is a nutritional supplement and should always be used with a Dyna-Gro™ complete nutrition formula."
