Hydrangea Pics: HydrangeaPinkBush.jpg

Hydrangea (/ha?'dre?nd?i?/;common labels hydrangea or hortensia) is a genus of 70-75 varieties of flowering crops native to southern and eastern Asia (China, Japan, Korea, the Himalayas, and Indonesia) and the Americas. By far the greatest varieties diversity is within eastern Asia, china notably, Japan, and Korea. The majority are shrubs 1 to 3 meters extra tall, however, many are small trees, among others lianas reaching up to 30 m (98 foot) by climbing up trees and shrubs. They could be either deciduous or evergreen, though the greatly cultivated temperate varieties are deciduous.Having been introduced to the Azores, H. macrophylla is very common now, particularly on Faial, which is known as the "blue island" because of the multitude of hydrangeas present on the island.Life cycleHydrangea plants are created from planting season to late fall months; they expand in flowerheads (corymbs or panicles) most often at the ends of the stems.

Usually the flowerheads contain two types of plants: small non-showy bouquets in the center or interior of the flowerhead, and large, showy plants with large vibrant sepals (tepals). These showy flowers tend to be expanded in a ring, or to the exterior of the tiny flowers. Plants in outrageous populations have few to none of them of the showy flowers typically, while cultivated hydrangeas have been chosen and bred to have significantly 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 plants are large circular flowerheads resembling pom-poms or, as the name signifies, the comparative brain of your mop. On the other hand, lacecap flowers bear round, flat flowerheads with a center core of subdued, small blossoms surrounded by outer wedding rings of bigger bouquets having showy tepals or sepals.

The blooms of some rhododendrons and viburnums can look, at first glance, just like those of some hydrangeas.Dirt and colors acidityIn most kinds the blooms are white, however in some kinds (notably H. macrophylla), can be blue, red, green, light crimson, or dark crimson. In these types the colour is afflicted by the presence of light weight aluminum ions which are available or tied up depending after the earth 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 supply aluminum ions and typically produce flowers that are blue to purple, 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 blossom pigments in the occurrence of aluminium ions that can be taken up into hyperaccumulating plants.[6] Minimizing the pH of potting soils or mixes usually does not change the flower color to blue, because these soils haven't any aluminum ions. The ability to blue or pink a hydrangea is also inspired by the cultivar. Some plants are selected because of their 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 damaged by aluminum and cannot be changed or shifted. Hydrangeas also have a nickname called 'Change Rose'.