- The Hydrangea is a genus of 75 species of flowering plants native to southern and eastern Asia, and both North America and South America.
- By far the greatest species diversity is in Asia. The majority of the species of Hydrangea are in China, Japan, and Korea.
- Most are shrubs ranging in size from 3-10 ft (0.9-3 m) in height. Some species, however, are small trees.
- Additionally, other types of Hydrangea are in the form of vines and maybe as long as 98 ft (30 m). The vine variety commonly drapes itself through the branches of trees and is a popular photo backdrop.
Hydrangea Flower Types
The plant can be either evergreen or deciduous. There are two flower arrangements:
- Mophead Hydrangea blooms develop large round flowerheads and resemble pom-poms or, as the name implies, the head of a mop.
- In contrast, lace cap flowers bear round, flat flowerheads and have a center core of subdued, fertile blooms. These are in turn surrounded by outer rings of showy, sterile flowers.
The species’ flowers bloom from early spring to late autumn. The flowerheads which contain these blooms grow at the end of long stems.
Hydrangea Color Variety
Other species have all the flowers sterile and of the same size. In most varieties of this plant, the flowers display as white. In others, however, the flowers can be blue, red, pink, light purple, or dark purple.
The acidity level of the soil is the determining factor for those colors. Relatively high concentrations of certain elements, such as aluminum or iron, will usually produce flower color closer to blue. If the soil has a high alkaline level, the plant will produce flowers pinker.