Although there are fertilizers made specifically for hydrangeas, Gardening Know How states that any quality general-purpose composition between 12-4-8 and 10-10-10 should suffice. Hydrangeas respond positively to both organic matter and chemical fertilizer.Continue Reading
For easy care, Gardening Know How recommends feeding hydrangeas a slow-release fertilizer for trees and shrubs on an annual basis. A small layer of soil must be applied on top of the fertilizer to activate it. Twice a year, hydrangeas should be given a moderate amount of liquid iron. For natural fertilization, a mix of compost, peat moss and sulfur is ideal.
Hydrangea plants that are given extra sulfur turn blue, and adding more lime to the fertilizer turns hydrangeas pink. White hydrangeas remain white regardless of what kind of fertilizer is used.Learn more about Outdoor Plants & Flowers
Hydrangeas should be trimmed annually, or when they grow excessively large for a given space. Varieties such as Pee Gee and smooth hydrangeas blossom better from new stalks than from older and more established woody stems, and they can be trimmed in winter or early spring without harming the plant.Full Answer >
Prepare soil that receives afternoon shade, and transplant hydrangeas by digging them up from their original spot and moving them to the new spot, along with a little of the old soil. Water the plant after moving it and allow it to set.Full Answer >
Prune hydrangeas by starting at the right time of year, removing dead or damaged stems and dead-heading bushes.This process takes only a few minutes. You need a pair of pruning shears and some pruning scissors.Full Answer >
Hydrangeas grow best when they get full sun in the morning and shade in the afternoon, although some species, such as the bigleaf hydrangea, do well in only partial shade. Hydrangeas may be planted in the fall or spring.Full Answer >