Hydrangea (/ha?'dre?nd?i?/;common labels hydrangea or hortensia) is a genus of 70-75 species of flowering vegetation native to southern and eastern Asia (China, Japan, Korea, the Himalayas, and Indonesia) and the Americas. Probably the greatest species diversity is at eastern Asia, china notably, Japan, and Korea. The majority are shrubs 1 to 3 meters high, however, many are small trees and shrubs, and more lianas getting up to 30 m (98 ft) by climbing up trees and shrubs. They could be either evergreen or deciduous, though the cultivated temperate varieties are deciduous greatly.Having been introduced to the Azores, H. macrophylla is currently very common, particularly on Faial, which is recognized as the "blue island" because of the vast number of hydrangeas present on the island.Life cycleHydrangea blossoms are produced from planting season to late autumn; they develop in flowerheads (corymbs or panicles) frequently at the ends of the stems.
Typically the flowerheads contain two types of blooms: small non-showy flowers in the center or interior of the flowerhead, and large, showy flowers with large vibrant sepals (tepals). These showy blossoms are long in a diamond ring often, or to the surface of the tiny flowers. Plant life in crazy populations typically have few to none of them of the showy blossoms, while cultivated hydrangeas have been chosen and bred to have significantly more of the larger type blossoms.There are two flower arrangements in hydrangeas with Corymb style inflorescens, which includes the commonly grown "bigleaf hydrangea"--Hydrangea macrophylla. Mophead plants are large round flowerheads resembling pom-poms or, as the name suggests, the relative mind of any mop. In contrast, lacecap flowers bear round, flat flowerheads with a center core of subdued, small blooms bounded by outer rings of bigger blossoms having showy tepals or sepals.
The blossoms of some rhododendrons and viburnums can appear, at first glance, very much like those of some hydrangeas.Colors and dirt acidityIn most species the bouquets are white, but in some varieties (notably H. macrophylla), can be blue, red, red, light crimson, or dark purple. In these species the color is influenced by the existence of aluminum ions which can be found or tied up depending upon the soil pH. For H. macrophylla and H. serrata cultivars, the flower color can be determined by the relative acidity of the soil: an acidic soil (pH below 7), will have available aluminum ions and typically produce flowers that are blue to purple, whereas an alkaline soil (pH above 7) will tie up aluminum ions and result in pink or red flowers.
This is the effect of a color change of the flower pigments in the presence of aluminium ions which can be taken up into hyperaccumulating vegetation.[6] Lowering the pH of potting soils or mixes usually will not change the bloom color to blue, because these soils haven't any aluminum ions. The ability to blue or green a hydrangea is inspired by the cultivar also. Some plants are selected for his or her ability to be blued, while others are bred and selected to be red, white or pink. The flower color of most other Hydrangea species is not influenced by aluminum and can't be changed or shifted. Hydrangeas also have a nickname called 'Change Rose'.
How to Prune Hydrangeas when dividing and pruning plants
Pruning Hydrangeas
Hydrangea Bush In Winter Prune hydrangea bushes:
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