Jumat, 27 Januari 2017

Hydrangea quercifolia 39;Snow Queen39;

Hydrangea (/ha?'dre?nd?i?/;common titles hydrangea or hortensia) is a genus of 70-75 species of flowering crops indigenous to southern and eastern Asia (China, Japan, Korea, the Himalayas, and Indonesia) and the Americas. By far the greatest kinds diversity is within eastern Asia, notably China, Japan, and Korea. The majority are shrubs 1 to 3 meters large, however, many are small trees, among others lianas reaching up to 30 m (98 foot) by climbing up trees. They could be either evergreen or deciduous, although cultivated temperate species are deciduous generally.Having been introduced to the Azores, H. macrophylla is currently very common, on Faial particularly, which is recognized as the "blue island" because of the vast number of hydrangeas present on the island.Life cycleHydrangea blooms are produced from planting season to late autumn; they increase in flowerheads (corymbs or panicles) most often at the ends of the stems.

Usually the flowerheads contain two types of plants: small non-showy plants in the center or interior of the flowerhead, and large, showy blossoms with large colourful sepals (tepals). These showy bouquets are extended in a engagement ring often, or to the exterior of the small flowers. Crops in untamed populations have few to nothing of the showy flowers typically, while cultivated hydrangeas have been decided on and bred to have significantly more of the bigger type blooms.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 suggests, the relative head of your mop. In contrast, lacecap flowers bear round, flat flowerheads with a center core of subdued, small bouquets bounded by outer bands of greater blossoms having showy tepals or sepals.

The flowers of some viburnums and rhododendrons can show up, initially, comparable to those of some hydrangeas.Colors and dirt acidityIn most types the blossoms are white, but in some types (notably H. macrophylla), can be blue, red, green, light crimson, or dark purple. In these species the color is affected by the presence of aluminum ions which are available or tied up depending after the land pH. For H. h and macrophylla. 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 produce flowers that are blue to purple typically, 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 occurrence of aluminium ions that can be adopted into hyperaccumulating vegetation.[6] Minimizing the pH of potting soils or mixes usually will not change the flower color to blue, because these soils have no aluminum ions. The capability to blue or green a hydrangea is influenced by the cultivar also. Some plants are selected for his or her ability to be blued, while some are bred and selected to be red, white or pink. The flower color of all other Hydrangea species is not influenced by aluminum and can't be changed or shifted. Hydrangeas likewise have a nickname called 'Change Rose'.