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 ?
To order by debit/credit card call 0843 922 5000 quoting DMTG058 or send a cheque made payable, using blue or black ink, to Hydrangea Pink Diamond Offer (DMTG058), PO Box 64, South West District Office, Manchester, M16 9HY or visit mirrorgardenoffers.co.uk.
Panicle hydrangeas can be found on campus in front of Faner Hall and around town thanks to gardeners who have caught on to their hardiness to winter and urban conditions, as well as their low maintenance.
To order by debit/credit card call 0843 922 5000, quote SMTG044 or send cheque, in blue or black ink, payable to Garden Offers to: Hydrangea Annabelle Offer (SMTG044) PO Box 64, South West District Office, Manchester, M16 9HY or see mirrorgardenoffers.co.uk
Hydrangeas are an undervalued, no-nonsense shrub and hopefully this one will bring them back into favour with gardeners and florists alike.
Their stablemate Rhododendron was seventh and, although she is second string on jockey bookings - Seamie Heffernan rides with Ryan Moore on Hydrangea - she did begin the season as arguably O'Brien's most promising three-year-old filly.
You can avoid this dangerous practice if you give your plants annual doses of hydrangea colourant.
As most hydrangea enthusiasts know, acidic soil yields blue flowers, and alkaline soil yields pink flowers.
But many gardeners in the UK have been disappointed after planting a beautiful blue hydrangea that then starts to produce pink flowers the following year.
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.
Located in Grand Haven, Michigan, Spring Meadow Nursery has over 500 varieties in their catalog, including 200 varieties marketed under the Proven Winners ColorChoice brand, including Incrediball[R] Hydrangea, 'Limelight' Hydrangea, My Monet[R] Weigela, Wine & Roses[R] Weigela, Quick Fire[R] Hydrangea, and Invincibelle[R] Spirit Hydrangea.