Hydrangea (/ha?'dre?nd?i?/;common titles hydrangea or hortensia) is a genus of 70-75 varieties of flowering plant life native to southern and eastern Asia (China, Japan, Korea, the Himalayas, and Indonesia) and the Americas. Definitely the greatest varieties diversity is within eastern Asia, notably China, Japan, and Korea. The majority are shrubs 1 to 3 meters large, however, many are small trees and shrubs, among others lianas reaching up to 30 m (98 feet) by climbing up trees. They can be either deciduous or evergreen, though the cultivated temperate kinds are deciduous greatly.Having been introduced to the Azores, H. macrophylla is now very common, on Faial particularly, which is known as the "blue island" due to the vast number of hydrangeas present on the island.Life cycleHydrangea blooms are produced from early spring to late autumn; they grow in flowerheads (corymbs or panicles) most often at the ends of the stems.
Typically the flowerheads contain two types of plants: small non-showy plants in the guts or interior of the flowerhead, and large, showy blooms with large colorful sepals (tepals). These showy blossoms tend to be long in a engagement ring, or to the exterior of the small flowers. Plants in untamed populations routinely have few to none of them of the showy plants, while cultivated hydrangeas have been bred and selected to have significantly 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 flowers are large circular flowerheads resembling pom-poms or, as the name means, the head of any mop. In contrast, lacecap flowers bear round, flat flowerheads with a center core of subdued, small blooms bounded by outer wedding rings of greater blooms having showy tepals or sepals.
The blooms of some viburnums and rhododendrons can appear, at first glance, comparable to those of some hydrangeas.Colors and garden soil acidityIn most types the plants are white, but in some species (notably H. macrophylla), can be blue, red, pink, light crimson, or dark purple. In these varieties the colour is influenced by the existence of lightweight aluminum ions which can be found or tangled up depending after the dirt pH. For H. macrophylla and H. serrata cultivars, the flower color can be dependant on the relative acidity of the soil: an acidic soil (pH below 7), will have available aluminum ions and typically produce flowers that are blue to purple, 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 flower pigments in the occurrence of aluminium ions which may be adopted into hyperaccumulating vegetation.[6] Lowering 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 capability to blue or pink a hydrangea is influenced by the cultivar also. Some plants are selected for their ability to be blued, while others 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'.
Hydrangea varieties Sperling Nursery amp; Gift Shop
Hydrangea macrophylla normalis Lacecap
climbing hydrangea this climbing type is called hydrangea anomala ssp
Hydrangea_macrophylla__Hortensia_hydrangea.jpg
Tidak ada komentar:
Posting Komentar