Hydrangea (/ha?'dre?nd?i?/;common brands 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 varieties diversity is in eastern Asia, notably China, Japan, and Korea. The majority are shrubs 1 to 3 meters high, however, many are small trees and shrubs, and more lianas achieving up to 30 m (98 foot) by climbing up trees and shrubs. They can be either evergreen or deciduous, though the cultivated temperate varieties are deciduous extensively.Having been introduced to the Azores, H. macrophylla is currently very common, on Faial particularly, which is known as the "blue island" because of the multitude of hydrangeas present on the island.Life cycleHydrangea bouquets are created from early spring to late fall; they develop in flowerheads (corymbs or panicles) frequently at the ends of the stems.
Usually the flowerheads contain two types of bouquets: small non-showy flowers in the center or interior of the flowerhead, and large, showy blooms with large bright colored sepals (tepals). These showy bouquets tend to be extended in a wedding ring, or to the exterior of the tiny flowers. Plant life in outrageous populations routinely have few to none of them of the showy blossoms, while cultivated hydrangeas have been picked and bred to have more of the larger type blooms.There are two flower arrangements in hydrangeas with Corymb style inflorescens, which includes the commonly grown "bigleaf hydrangea"--Hydrangea macrophylla. Mophead blossoms are large round flowerheads resembling pom-poms or, as the name means, the comparative brain 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 blossoms of some rhododendrons and viburnums can seem, at first glance, comparable to those of some hydrangeas.Colors and soil acidityIn most kinds the flowers are white, but in some types (notably H. macrophylla), can be blue, red, red, light crimson, or dark purple. In these varieties the color is influenced by the existence of aluminium ions which are available or tangled up depending after the ground 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 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 caused by a color change of the flower pigments in the occurrence of aluminium ions which is often adopted into hyperaccumulating crops.[6] Minimizing 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 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 damaged by aluminum and cannot be changed or shifted. Hydrangeas also have a nickname called 'Change Rose'.
June 4, 2013 Hydrangea garden 2013 Pinterest
Sweet Carol Bliss Hydrangea © 2013 Patty Hankins
Hydrangea seemanii 2013 Hydrangea seemanii
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