Hydrangea Macrophylla consist of what is commonly called Mophead Hydrangea, Bigleaf, or Florist Hydrangea and Lacecap Hydrangea. Mophead Hydrangeas are usually blue or pink and have become the most popular Hydrangea grown in home gardens and landscapes today. Mophead Hydrangeas can range in color from deep blue through almost red and many shades of violet. There are a few exceptions to this which are white mophead hydrangea.
Lacecap Hydrangea (Hydrangea macrophylla normalis) – are lovely plants with graceful large shiny green leaves. The blooms consist of fertile tiny center blossoms which look unopened , surrounded by large star shaped open flowers. A spectacular flowering shrub.
Plant your Hydrangea in the right location and they will give you years of beauty. No Hydrangea does well in heavy shade as their blooms will be sparse. All hydrangeas will thrive in morning sun and afternoon shade. The amount of sun tolerated by Hydrangeas is dependent on the zone where it is planted. In the north, hydrangeas may tolerate full sun where further south more shade will be necessary. If you live in a hot area, be sure to mulch your hydrangea well with a bark mulch to keep the soil cooler and hold in the moisture. Here in zone 6a, our hydrangeas perform best when planted where they receive morning sun and some afternoon shade. They tolerate clay soil which is what we have here, just make sure their roots aren’t kept too wet.
The color of these Hydrangeas can be influenced by the acidity of the soil. For blue flowers you need to add aluminum sulfate (1 tablespoon per gallon of water). If you want your flower more pink, add a little dolomitic lime a few times a year to make the soil less acidic.
Hydrangea Macrophyla require little pruning, just remove spent flowers after blooming and shape as desired. Next years buds are formed at the end of the upright or lateral branches by late summer so don’t prune to late or you will loose your blossoms for the following year.