Rosa rugosa

The rough rose tree , or rose tree of Japan ( Rosa rugosa ), is a species of Rosier classified in the section of the '' Cinnamomeae '', originating in the Far East (north-eastern of the China, Japan, Korea and south-east of the Siberia), where it grows on the Côte S, often in the Dune S Sable use.

Its name Japanese is (), meaning “pear of shore”.

Description

It is a suckering Arbuste which emits new stems starting from the stock and forms dense thickets from 1 to 1,5 meter from top.

The stems densément are densément covered with many right pivots and courts (3 to 10 mm the long ones). The Sheet S, of 8 with 15 cm length, are imparipennées made up from 5 to 9 leaflets (generally seven), each leaflet has 3 with 4 cm length, with the faces definitely corrugated and rough, from where the name of the species.

The Fleur S are agreeably scented, of white color with pink dark, a diameter of 6 with 9 cm, with a little ruffled petals; flowering is spread out summer with the autumn (from June to September in the northern hemisphere).

The fruits are rather large (2 with 3 cm of diameter) and often a length lower than the diameter, and not lengthened as the majority of the others let us cynorrhodons; towards the end of the summer and the beginning of the autumn, it often happens that the plant carries at the same time fruits and flowers. The sheets generally transfer with the yellow shining in autumn before falling.

Culture and use

Rosa rugosa is largely employed like decorative Plante. This rose tree was introduced into many areas of Europe and North America. It has very many vernacular names, several of them refer the resemblance of the fruit to a Tomate, for example “tomato of sea” or “tomato of beach”; one also meets “rose tree of spray” “rose tree of beach”.

With the Japan and in China, where it is cultivated since a thousand of years, one makes use of the flowers suavement odorous to make pot-rotted .

This Hybrid species easily with many other rose trees and is very appreciated selectors for its very great resistance to the diseases of the rust and the black spots. It is extremely tolerant with the salted spray of the littoral and the storms, and it is often the first shrub in seaside. It is largely used in installation Paysage rs for its robustness and its absence of problems. Requiring little maintenance, it is a plant adapted for the plantations in mass; its tolerance with salt makes it very useful for the plantations along the roads which are subjected regularly to the Salage against the glaze.

varieties

Many a Cultivar S was selected for a horticultural use, the color of the flowers varying of the white to dark red-crimson, with semi-double or double flowers in which whole or part of the cheesecloth S are transformed into supernumerary petals.

Rosa rugosa “Thumbergiana”, Rosa rugosa “rugosa” the type of the species
very odorous Rosa rugosa “alba”
Rosa rugosa “rosea”
Rosa rugosa “will rubra” with large red flowers
“Adantifolia” horticultural variety obtained by Cochet in 1907

hybrids

Among the most popular cultivars, one can quote:

Rosa rugosa repens alba or Rosa X paulii Rehd.et Rosa rugosa repens rosea Hort. or Rosa X paulii “Rosea ( Rosa rugosa X Rosa arvensis
“Agnes” obtained in Canada in 1922 ( Rosa rugosa X Rosa persiana ) with the very double flowers of color fishes.
“Beautiful poitevine” (Bunting, 1894) with flowers punts pink poupre all the summer
“White Double of Coubert” (Cockerel-Cockerel, 1892) white, scented, semi-double and its sport very double “memory of Philémon Cockerel”
“Fimbriata” with small notched double flowers pointing out eyelets (1891 Morlet) ( Rosa rugosa X “Mrs. Alfred Carrière”)
“Fru Dagmar Hastrup” (pink, simple),
“Pink Grootendorst” with pink transfering with the red, semi-double flowers
“Rosery of Haÿ” (1901 Cockerel-Cockerel) with large flowers punts, crimson red, scented
“Scabosa” of unknown origin, with simple flowers red
“Schneezwerg” or Snowdarf” (Lambert 1891 Rosa rugosa X polyantha white or Rosa bracteata with white flowers on three lines, from June to September.

References

Pink , Peter Beales, ED. oak, ISBN 2-85108-589-1
'' Rosa rugosa '' on the site '' Flora off Clouded ''
A., ED. (1992). '' New RHS Dictionary off Gardening ''. Macmillan. * Biological Flora off the British Isles '' Rosa rugosa ''

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