Latin name Hydrangea Hydrangea received from the Greek words hydro - «water" because this plant moisture-loving.It was first discovered botanist F. Sommerson in China during the French expedition around the world.This was Hydrangea macrophylla (Hydrangea macrophylla), which today is grown throughout the world.However, it is so thermophilic, what can only grow indoors or in containers.
For cultivation in the open field can recommend a tree hydrangea (Hydrangea arborescens), which is famous for its good winter hardiness.This upright deciduous shrub up to two meters with rounded crown is large (15 cm long) broadly ovate leaves with serrated edges and a heart-shaped base.From above they are light green, and the bottom gray-bluish.White and white and cream-colored flowers are collected in hemispherical inflorescences up to 25 cm in diameter.
tree hydrangea blooms in July, is growing rapidly, demanding to fertility and soil moisture.A particularly beautiful variety with large buds.In grade Grandiflora (grandiflora) white hemispherical inflorescences up to 15-20 cm in diameter.In the variety Sterilis (Sterilis) inflorescences composed of sterile flowers, at first white, then greenish.It is a shrub of medium size, up to 1.5 m, with leaves up to 20 cm.
In central Russia grows well Hydrangea paniculata (Hydrangea paniculata).When grown in temperate climates, it forms a dense rounded crown height of two meters.Young shoots are reddish-brown, slightly pubescent.Leaves velvety, grayish-green, elliptic or oblong-ovate, up to 12 cm, with a pointed tip and serrated edges.In spring, they bloom later of all kinds.In July - August the young shoots appear pyramidal panicles up to 20 cm. They are fragrant and attract bees.Creamy white sterile flowers (2.5-3 cm diameter) with time rozoveyut.This species grown bushes more winter-hardy, but demanding to moisture.Abundantly flowering varieties Floribunda (Floribunda) differs long and narrow white inflorescences with large sterile flowers.
hydrangea petiolate, or scansorial (Hydrangea petiolaris), is capable of using aerial roots and suckers attached to the wall or a tree, reaching a height of three meters.Sharp-toothed leaves, with pointed tops.Greenish-white or pale pink flowers form a flat corymbose inflorescences to 20 cm in diameter.This type of hydrangea hardy, but the young plants in the harsh winter, the tips of the shoots may be affected.
should be planted in areas protected from cold winds.Suitable well-drained and fertile soil.Blossoms only on the dark places, a good honey plant.In the absence of support is spread along the ground.Shoots can easily take root, so the plant becomes ground cover.
In the culture of hydrangeas can not tolerate the strong shading and calcareous soils.Adult plants are cold-resistant and light-requiring, than the young and demanding to fertility and soil moisture.They are propagated by softwood cuttings in the main without processing growth stimulants, at least - suckers, by dividing the bush, seeds or by grafting.The best time for grafting - the flowering period (mid-July).However, rooting cuttings is possible and before flowering (in June).In this case, cutting them at the bottom left a piece of old wood - cut stalks "with the heel."Slightly acidic peat promotes the growth of roots.To increase the water capacity in the substrate can add chopped sphagnum moss.Rooting cuttings takes place in three - four weeks at a temperature of 16-20 ° C and shading.
Hortense can be propagated by dividing the bush and root suckers.In the spring or autumn bush dig, divide into two or three parts so that each plant had at least two or three kidney regeneration.
Bushes are sensitive to the content of lime in the soil, and when it happens excess lighting leaves as a result of chlorosis.This disease can also occur with high content of humus in the soil.Hydrangea blossoms form on new growth this year, so in early spring when the buds begin to swell and growth you can see the location of new shoots, old branches are cut much, and then the formation of new shoots strong neat.
Hydrangeas rarely damaged by pests.Sometimes settles on the leaves spider mites, aphids and green leafy plant mainly for growing hydrangeas indoors.In wet years on its leaves may appear powdery mildew.
"Outdoor Life" №10-2006