Hydrangea (/ha?'dre?nd?i?/;common labels hydrangea or hortensia) is a genus of 70-75 species of flowering plants local to southern and eastern Asia (China, Japan, Korea, the Himalayas, and Indonesia) and the Americas. By far the greatest varieties diversity is eastern Asia, china notably, Japan, and Korea. Most are shrubs 1 to 3 meters large, however, many are small trees and shrubs, and others lianas attaining up to 30 m (98 ft) by climbing up trees. They can be either deciduous or evergreen, although cultivated temperate kinds are deciduous widely.Having been introduced to the Azores, H. macrophylla is quite typical now, particularly on Faial, which is recognized as the "blue island" because of the vast number of hydrangeas present on the island.Life cycleHydrangea flowers are produced from early spring to late autumn; they grow in flowerheads (corymbs or panicles) frequently at the ends of the stems.
Typically the flowerheads contain two types of flowers: small non-showy bouquets in the center or interior of the flowerhead, and large, showy plants with large colourful sepals (tepals). These showy blossoms are often extended in a diamond ring, or to the surface of the tiny flowers. Plants in crazy populations have few to none of the showy plants typically, while cultivated hydrangeas have been picked and bred to have more of the larger type bouquets.There are two flower arrangements in hydrangeas with Corymb style inflorescens, which include the commonly grown "bigleaf hydrangea"--Hydrangea macrophylla. Mophead blossoms are large round flowerheads resembling pom-poms or, as the name means, the head 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 blooms of some rhododendrons and viburnums can appear, at first glance, much like those of some hydrangeas.Ground and colors acidityIn most species the blooms are white, however in some types (notably H. macrophylla), can be blue, red, pink, light purple, or dark purple. In these kinds the color is damaged by the presence of light weight aluminum ions which are available or tangled up depending after the land 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 cause pink or red flowers.
This is caused by a color change of the bloom pigments in the occurrence of aluminium ions which is often adopted into hyperaccumulating plant life.[6] Lowering 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 influenced by the cultivar also. Some plants are selected for their ability to be blued, while some are bred and selected to be red, pink or white. The flower color of all other Hydrangea species is not afflicted by aluminum and cannot be changed or shifted. Hydrangeas also have a nickname called 'Change Rose'.
Hydrangea Still Life Painting, Oil on canvas panel board, 8x8 inches
Hydrangea,quot; attributed to Jane Peterson, oil on board, 24 x 20
Flower Oil Painting Hydrangeas
Hydrangea Painting Original Oil on Board Flower Wall Art Janet Zeh
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