Nikko Blue Hydrangea
Nikko Blue hydrangea is the most common class of hydrangea. The Nikko Blue hydrangea has large, round flower heads that are a bold blue. The flowers bloom in late spring, over a rounded canopy of dense foliage. Nikko Blue hydrange have large, oval-shaped leaves that often taper to a point.
The flower color of the Nikko Blue hydrangea depends on the acidity level of the soil. In acidic soil, the Nikko Blue hydrangea has deep blue flowers, while in alkaline soil, the blooms tend to be lighter, and sometimes even pink.
Nikko Blue hydrangea grows best in fertile, well-drained soils. They are not very drought tolerant, and should be watered regularly during dry periods. The Nikko Blue hydrangea prefers full sun, but should be given half shade in areas that have overly hot summers. The Nikko Blue hydrangea shrubs grow from four to six feet tall, and have a mature spread of five to seven feet.
Hardy in zones five through nine, the Nikko Blue hydrangea have lustrous bright green leaves and lovely flower colors. They work well as an accent plant, or can be placed in a border. The Nikko Blue hydrangea blooms on large buds formed on growth from the previous season. Because of this, any pruning should be done immediately after flowering.
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