hydrangea


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hydrangea

(hīdrān`jə): see saxifragesaxifrage
, common name for several members of the Saxifragaceae, a family of widely varying herbs, shrubs, and small trees of cosmopolitan distribution. They are found especially in north temperate zones and include many arctic and alpine species.
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Hydrangea

 

a plant genus of the family Hydrangeaceae. It includes mostly deciduous shrubs and some treelike lianas and small trees. The leaves are opposite or arranged verticillately in threes and have dentate edges. The flowers are clustered in cymes or panicles. The marginal flowers, and sometimes all the flowers of the cluster, are sterile and have four to five large white, blue, or pink sepals. The fertile flowers are often unattractive. The fruit is a pod. There are about 80 species in South and North America and in East and Southeast Asia. Two species are found in the USSR. Several species of Hydrangea are used extensively in horticulture under that name (gortenziia in the USSR).


Hydrangea

 

the name used in decorative horticulture for the cultivated species of the genus Hydrangea. The most popular species is garden hydrangea (Hydrangea macrophyl-la, formerly H. hortensis), a native of Japan that was introduced into culture at the end of the 18th century. In this species the flowers are mostly corymbiform inflorescences in the center of which are small bisexual flowers. with large asexual flowers with extremely accreted sepals around the edges. There are varieties with raspberry-colored, pink, light blue, and white flowers. They are grown in greenhouses and in homes as house plants. Garden hydrangeas reproduce by means of green cuttings. The cuttings root in baskets at temperatures of 16°-18° C and then they are kept in greenhouses. In April the plants begin to flower. Outdoors. garden hydrangea is successfully grown if it is well sheltered by soil or leaves during the winter.

Sometimes panicled hydrangea (H. paniculata) is grown in greenhouses or outdoors. It is a shrub with large elongated greenish-white inflorescences that turn pink as they finish blooming. They are especially effective bole specimens and are good for growing in tubs. as well. Panicled hydrangeas propagate by cuttings and by layering. Shaggy hydrangea (H. heteromalla, formerly H. Bretschneideri) is a large shrub with many flat or corymbiform inflorescences. It is grown in the same manner as panicled hydrangea. Shrubby hydrangea (H. arborescens) is an upright shrub with broad ovate leaves and abundant round, white flower clusters. There is a garden form of shrubby hydrangea with very large clusters of sterile flowers.

REFERENCE

Saakov, S. G. Gortenzii.Moscow, 1959.

hydrangea

any shrub or tree of the Asian and American genus Hydrangea, cultivated for their large clusters of white, pink, or blue flowers: family Hydrangeaceae
References in periodicals archive ?
It's also not unusual to see small front gardens dominated by a hydrangea that has been left to its own devices.
Some gardeners prize the new, flashier forms of Hydrangea paniculata, where breeders have concentrated their attention on trying to produce pink cultivars.
Hydrangeas deserve their place in our |GARDENS but if pompoms of pink and blue are not for you, try exquisite white varieties
Kathryn says she's considering scheduling her next hydrangea party a bit earlier in the blooming season so that guests can see a mix of blooms and buds instead of everything at its peak.
Apparently, the name hydrangea comes from "hydro" (water) and "angeion" (vessel) because the shape of the hydrangea reminds us of an old water carrier or vessel.
French authorities believe the crimewave has spread from Germany where stealing hydrangea flowers is particularly common in Bavaria.
Please send cheques and postal orders, made payable to Mr Fothergill's, to Sunday People Hydrangea Offer, Mr Fothergill's, Rookery Farm, Holbeach St Johns, Spalding, PE12 8SG and clearly state your name and address.
Hydrangea Limelight is a new variety, and a real show-stopper.
Mr Dent, Dudley AIDEALLY the best time to prune the large macrophylla hydrangeas, be it the lace cap or hortensia type, is spring, when the stems should be cut back to ground level.
Hydrangea has been common as a garden plant for many years but its popularity as a cut flower is increasing.
Hydrangea blooms are of course influenced by soil type and those of you blessed with an acid soil will mostly enjoy shades of blue (which according to folklore is the luckier colour) while others with an alkaline soil will be admiring glorious pictures of pink.
A great red Hydrangea that will bloom reliably in the north.