It is a deciduous shrub Hydrangea macrophylla of the genus scrubby, with a height of 0.5-1 meters. Leaves oval or obovate, margin with obtuse teeth. The inflorescence of the umbrella house is apex, globular. Almost all flowers are asexual flowers, and the so called `flowers` are only sepals. China cultivated the hydrangea early. In the Ming and Qing Dynasties, there were Hydrangea flowers in the Jiangnan gardens built in the Ming and Qing Dynasties. The park built in early twentieth Century is also inseparable from the planting of hydrangea. Modern parks and scenic spots are planted in patches to form landscapes. The cultivated Hydrangea is highly colourful with blue, white, purplish red, pink, pink and other colors. It is a common ornamental flower and tree.
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