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  • List of pests and diseases of roses

    serch.it?q=List-of-pests-and-diseases-of-roses

    Rose aphid (Macrosiphum rosae) feeding on buds and shoots Rose rust (Phragmidium) Two-spotted mite (Tetranychus urticae) on Gardenia Yellow tea thrips (Scirtothrips dorsalis) Bristly roseslug (Cladius difformis) on the underside of a leaf Cottony cushion scale (Icerya purchasi) Leaf damage caused by a leafcutting bee (Megachile sp.) Root-knot nematode (Meloidogyne sp.) nodule damage to roots Flea beetle (Aphthona flava) Roses (Rosa species) are susceptible to a number of pests, diseases and disorders. A large number of the problems affecting roses are seasonal and climatic. Some varieties of roses are naturally more resistant or immune than others to certain pests and diseases. Cultivation requirements of individual rose species and cultivars, when observed, often assist in the prevention of pests, diseases and disorders.

  • Blue rose

    serch.it?q=Blue-rose

    Blue roses created by artificially colouring white roses. A blue rose is a flower of the genus Rosa (family Rosaceae) that presents blue-to-violet pigmentation instead of the more common red, white, or yellow. Blue roses are often portrayed in literature and art as symbols of love, prosperity, or immortality. However, because of genetic limitations, they do not exist in nature. In 2004, researchers used genetic modification to create roses that contain the blue pigment delphinidin. So-called "blue roses" have been bred by conventional hybridization methods, but the results, such as "Blue Moon", are more accurately described as lilac in color.

  • Rose

    serch.it?q=Rose

    A rose is a woody perennial flowering plant of the genus Rosa, in the family Rosaceae, or the flower it bears. There are over three hundred species and thousands of cultivars. They form a group of plants that can be erect shrubs, climbing or trailing with stems that are often armed with sharp prickles. Flowers vary in size and shape and are usually large and showy, in colours ranging from white through yellows and reds. Most species are native to Asia, with smaller numbers native to Europe, North America, and northwestern Africa. Species, cultivars and hybrids are all widely grown for their beauty and often are fragrant. Roses have acquired cultural significance in many societies. Rose plants range in size from compact, miniature roses, to climbers that can reach seven meters in height. Different species hybridize easily, and this has been used in the development of the wide range of garden roses. The name rose comes from French, itself from Latin rosa, which was perhaps borrowed from Oscan, from Greek ρόδον rhódon (Aeolic βρόδον wródon), itself borrowed from Old Persian wrd- (wurdi), related to Avestan varəδa, Sogdian ward, Parthian wâr.

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