What type of plant food should I use on my Hydrangeas?
Use a slow-release plant food in spring, April to May. Read the label for application, water well and the fertilizer will feed the plant for the rest of the year. NPK of 12-12-12 is recommended.
NPK = 1) Nitrogen (leaf development, top growth) 2) Phosphorus (roots and blooms) 3) Potassium aka Potash (roots)