Hydrangea (scientific title: Hydrangea, pronounced: haidréindʒiə) occurs as genus of astir Centred coinage of flowering plants native to southern & eastern Asia (from Japan to China, the Himalaya and Indonesia) and North and South America. Virtually all come shrubs 1-3 m tall, however occasionally come little trees, and others vines reaching higher to Xxx m by climbing up trees. It may be either deciduous or evergreen, though the widely cultivated moderate coinage come everthing deciduous.

Hydrangeas make flowers from early spring to late autumn; these are carried within bunches, at a terminates of the stems. Apiece single hydrangea flower is comparatively little; nonetheless, a display of color is enhanced by a ring of limited bracts around both flower.

Inside virtually all metal money a flowers come white, but around occasionally metal money, may be blue, red, pink, or purple; in these metal money a precise color even typically based upon a acidity or alkalinity of the soil. Acidic soils green groceries blue flowers, neutral soils produce super blench cream flower petal, & alkaline soils results around pink or even purple. Hydrangeas come one of super couple of plants that accumulate aluminium. Atomic number 13 is freed from either acid soils, & forms complexes in the hydrangea flower returning the two their blue color.

Species
There are astir Century mintage in the genus Hydrangea. Selected metal money include: Hydrangea anomala (Climbing Hydrangea). Himalaya, sou'west China. Hydrangea arborescens (Smooth Hydrangea). Eastern United States. Hydrangea arborescens subsp. discolor (Ashy Hydrangea; syn. H. cinerea) Hydrangea arborescens subsp. radiata (Silverleaf Hydrangea; syn. H. radiata) Hydrangea heteromalla. Himalaya, west & to the north China. Hydrangea hirta . Japan. Hydrangea involucrata. Japan, Taiwan. Hydrangea longipes. American China. Hydrangea macrophylla (Bigleaf Hydrangea). Southern Japan. Hydrangea paniculata (Panicled Hydrangea). Eastern China, Korea, Japan, Sakhalin. Hydrangea petiolaris. Japan, Korea, Sakhalin. Hydrangea quercifolia (Oakleaf Hydrangea). South-east United States. Hydrangea robusta. China. Hydrangea sargentiana. American China. Hydrangea scandens. Southern Japan south to the Philippines. Hydrangea serrata. Japan, Korea. Hydrangea serratifolia. Chile, american Argentina.

Cultivation and uses
Hydrangeas come popular ornamental plants, grown for their large flowerheads, with H. macrophylla being by far the most widely grown with over 600 named cultivars. A select few come better pruned in an annual basis once a freshly leaf buds start out to come out. Whenever does'nt pruned regularly, a bush might turn into super 'leggy', growing upwards until a weight of a stems is greater than their nature & severity, at which point the stems might sag to the ground and even break.

More varieties single flower in 'old wood'. So recently wood ensuant from either pruning might non create flowers a as a consequence year.

Gardeners may typically control a flower color by adding lime or potash to alter a alkalinity level about a plant.

A select few popular Hydrangea cultivars include: 'Beaute Vendomoise' (elephantine lacecap) 'Blue Bonnet' 'Blue Wave' 'Bluebird' 'Endless Summer' (perpetual bloomer) 'Forever Pink' 'Lilicana' 'Nikko Blue' 'Pia' (dwarf) 'Veitchii'

image:hydrangea.watermouth.hans arp.750pix.jpg|A Hydrangea at Watermouth Castle, to the north Devon, England Image:Hydrangea-heads-pale.png|Close higher of blench large leaf hydrangea flowerheads. Image:Fallhydrangeablooms.jpg|Hydrangea flowerheads (closeup) Image:hydrangea_redoute.JPG|A Hydrangea painted per botanic creative person Redouté image:Hydrangea Anomala1.jpg|Climbing Hydrangea image:Hydrangea Anomala2.jpg|Climbing Hydrangea image:Hydrangea Anomala3.jpg|Climbing Hydrangea image:Hydrangea macrophylla - Bigleaf hydrangea1.jpg|Bigleaf Hydrangea image:Hydrangea macrophylla - Bigleaf hydrangea2.jpg|Bigleaf Hydrangea image:Hydrangea macrophylla - Hortensia hydrangea.jpg|Bigleaf Hydrangea image:Hydrangea quericifolia1.jpg|Oakleaf Hydrangea image:Hydrangea quericifolia2.jpg|Oakleaf Hydrangea

da:Hortensia (Hydrangea) de:Hortensien es:Hydrangea eo:Hortensio fr:Hortensia it:Hydrangea nl:Hortensia