Hydrangea (/ha?'dre?nd?i?/;common labels hydrangea or hortensia) is a genus of 70-75 kinds of flowering vegetation native to southern and eastern Asia (China, Japan, Korea, the Himalayas, and Indonesia) and the Americas. Certainly the greatest varieties diversity is eastern Asia, notably China, Japan, and Korea. Most are shrubs 1 to 3 meters high, but some are small trees, yet others lianas getting up to 30 m (98 ft) by climbing up trees and shrubs. They can be either deciduous or evergreen, although generally cultivated temperate kinds are deciduous.Having been introduced to the Azores, H. macrophylla is now very common, on Faial particularly, which is known as the "blue island" due to the multitude of hydrangeas present on the island.Life cycleHydrangea bouquets are created from planting season to late fall months; they expand in flowerheads (corymbs or panicles) frequently at the ends of the stems.
Usually the flowerheads contain two types of blooms: small non-showy plants in the guts or interior of the flowerhead, and large, showy blooms with large brilliant sepals (tepals). These showy flowers are often lengthened in a diamond ring, or to the surface of the small flowers. Plants in crazy populations routinely have few to nothing of the showy bouquets, while cultivated hydrangeas have been preferred and bred to have more of the bigger type blossoms.There are two flower arrangements in hydrangeas with Corymb style inflorescens, which include the commonly grown "bigleaf hydrangea"--Hydrangea macrophylla. Mophead blooms are large spherical flowerheads resembling pom-poms or, as the name signifies, the comparative mind of your mop. On the other hand, lacecap flowers bear round, flat flowerheads with a center core of subdued, small flowers surrounded by outer rings of larger flowers having showy sepals or tepals.
The flowers of some rhododendrons and viburnums can look, at first glance, similar to those of some hydrangeas.Garden soil and colors acidityIn most types the bouquets are white, but in some kinds (notably H. macrophylla), can be blue, red, green, light crimson, or dark purple. In these kinds the color is affected by the presence of metal ions which are available or tied up depending upon the garden 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 supply aluminum ions and typically produce flowers that are blue to purple, whereas an alkaline soil (pH above 7) will tie up aluminum ions and bring about pink or red flowers.
This is the effect of a color change of the blossom pigments in the presence of aluminium ions which may be adopted into hyperaccumulating plant life.[6] Reducing 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 capability to blue or green a hydrangea is also affected by the cultivar. Some plants are selected for their ability to be blued, while others are bred and selected to be red, pink or white. The flower color of all other Hydrangea species is not affected by aluminum and cannot be changed or shifted. Hydrangeas also have a nickname called 'Change Rose'.
the hydrangea flower meaning comes from a japanese legend which evokes
The Hydrangea绣球花 is a symbol expressing love, gratitude, and
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