Rabu, 22 Februari 2017

Hydrangea quercifolia 39;Snow Queen39;

Hydrangea (/ha?'dre?nd?i?/;common labels hydrangea or hortensia) is a genus of 70-75 types of flowering plants 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, notably China, Japan, and Korea. Most are shrubs 1 to 3 meters large, however, many are small trees, among others lianas getting up to 30 m (98 feet) by climbing up trees. They can be either evergreen or deciduous, though the cultivated temperate varieties are all deciduous extensively.Having been introduced to the Azores, H. macrophylla is quite typical now, on Faial particularly, which is known as the "blue island" due to the multitude of hydrangeas present on the island.Life cycleHydrangea blooms are created from early spring to late autumn; they expand in flowerheads (corymbs or panicles) most often at the ends of the stems.

Usually the flowerheads contain two types of bouquets: small non-showy plants in the guts or interior of the flowerhead, and large, showy flowers with large colourful sepals (tepals). These showy bouquets are prolonged in a ring often, or to the surface of the small flowers. Crops in crazy populations have few to none of them of the showy blooms typically, while cultivated hydrangeas have been determined and bred to have more of the bigger type blooms.There are two flower arrangements in hydrangeas with Corymb style inflorescens, which includes the commonly grown "bigleaf hydrangea"--Hydrangea macrophylla. Mophead blooms are large rounded flowerheads resembling pom-poms or, as the name suggests, the comparative head of a mop. In contrast, lacecap flowers bear round, flat flowerheads with a center core of subdued, small bouquets bounded by outer jewelry of greater plants having showy tepals or sepals.

The plants of some viburnums and rhododendrons can show up, at first glance, a lot like those of some hydrangeas.Colors and garden soil acidityIn most varieties the plants are white, but in some species (notably H. macrophylla), can be blue, red, pink, light crimson, or dark purple. In these kinds the color is influenced by the presence of metal ions which can be found or tied up depending upon the ground 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 bloom pigments in the occurrence of aluminium ions that can be taken up into hyperaccumulating vegetation.[6] Bringing down the pH of potting soils or mixes usually will not change the blossom color to blue, because these soils haven't any aluminum ions. The capability to blue or pink 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 most other Hydrangea species is not affected by aluminum and can't be changed or shifted. Hydrangeas likewise have a nickname called 'Change Rose'.