Hydrangea (/ha?'dre?nd?i?/;common names hydrangea or hortensia) is a genus of 70-75 kinds of flowering plant life native to southern and eastern Asia (China, Japan, Korea, the Himalayas, and Indonesia) and the Americas. Undoubtedly the greatest kinds diversity is at eastern Asia, notably China, Japan, and Korea. Most are shrubs 1 to 3 meters high, but some are small trees, and more lianas getting up to 30 m (98 feet) by climbing up trees and shrubs. They can be either evergreen or deciduous, although generally cultivated temperate kinds are deciduous.Having been introduced to the Azores, H. macrophylla is now very common, particularly on Faial, which is recognized as the "blue island" because of the multitude of hydrangeas present on the island.Life cycleHydrangea flowers are created from early spring to late fall; they increase in flowerheads (corymbs or panicles) frequently at the ends of the stems.
Usually the flowerheads contain two types of plants: small non-showy flowers in the guts or interior of the flowerhead, and large, showy blossoms with large bright colored sepals (tepals). These showy blooms are lengthened in a wedding ring often, or to the surface of the small flowers. Plant life in untamed populations have few to none of the showy plants typically, while cultivated hydrangeas have been bred and chosen to have more of the bigger type plants.There are two flower arrangements in hydrangeas with Corymb style inflorescens, which include the commonly grown "bigleaf hydrangea"--Hydrangea macrophylla. Mophead flowers are large spherical flowerheads resembling pom-poms or, as the name suggests, the relative head of any mop. In contrast, lacecap flowers bear round, flat flowerheads with a center core of subdued, small plants encircled by outer bands of bigger blossoms having showy tepals or sepals.
The blossoms of some rhododendrons and viburnums can look, at first glance, just like those of some hydrangeas.Colors and soil acidityIn most types the blossoms are white, but in some kinds (notably H. macrophylla), can be blue, red, green, light purple, or dark purple. In these kinds the colour is influenced by the presence of light weight aluminum ions which can be found or tied up depending after the earth pH. For H. macrophylla and H. serrata cultivars, the flower color can be dependant on the relative acidity of the soil: an acidic soil (pH below 7), will have available aluminum ions and produce flowers that are blue to purple typically, whereas an alkaline soil (pH above 7) will tie up aluminum ions and lead to pink or red flowers.
This is the effect of a color change of the flower pigments in the occurrence of aluminium ions which is often adopted into hyperaccumulating crops.[6] Cutting down the pH of potting soils or mixes usually will not change the flower color to blue, because these soils have no aluminum ions. The ability to blue or pink a hydrangea is also affected by the cultivar. Some plants are selected for his or her ability to be blued, while others are bred and selected to be red, pink or white. The flower color of most other Hydrangea species is not influenced by aluminum and can't be changed or shifted. Hydrangeas likewise have a nickname called 'Change Rose'.
delicate and subdued there is a Hydrangea to suite anyone’s taste
The over abundant hydrangea filled mantel, 2014 editionFunky Junk
primavera 2014: nuovi arrivi di Ortensie Hydrangea::Vivai Priola
Hydrangea LJ 62014 3
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