I am a male but I'm proud to say that I love flowers. Do you like flowers too? I guess you do. If so, I hope you will enjoy to see the photos of different color of roses. So the topic I want to talk with you here today is about plants. Rose is a perennial flower shrub of vine of the genus Rosa, within the family Rosaceae, that species form a group of erect shrubs and climbing or trailing plants, with the stems that are often armed with sharp prickles. Most are native to Asia with smaller numbers of species native to Europe, North America, and northwest Africa. The leaves are alternate and pinnately compoud, with sharply toothed oval shaped leaflets. The plant's fleshy edible fruit, which ripens in the late summer through autumn, is called a rose hip.
The name rose comes from French, itself from Latin, rosa, which was borrowed from Oscan, from Greek rhodion, from old Persian wurdi "flower". Attar of rose is the steam extracted essential oil from rose flowers that has been used in perfumes for centuries. The flowers of most species of roses have five petals, with the exception of Rosa sericea, which usually has only four. Each petal is divided into two distinct lobes and is usually white or pink, though in a few species yellow or red. Roses are subject to several diseases, such as rose rust (Phragmidium mucronatum), rose black spot, and powdery mildew. Fungal diseases in the Rose are best solved by a preventative fungicidal spray program rather than by trying to cure an infection after it emerges on the plant. After the disease is visible, its spread can be minimized through pruning and the use of fungicides, although the actual infection cannot be reversed. Certain rose varieties are considerably less susceptible than others to fungal diseases. The main pest affecting roses is the aphid (greenfly), which sucks the sap and weakens the plant. (Ladybugs are a predator of aphids and should be encouraged in the rose garden.
Roses are best known for their flowers. Roses are popular garden shrubs, as flowering shrubs. They are also grown as cut flowers, as one of the most popular and commonly sold florists' flowers. In horticulture roses are propagated by grafting or rooting cuttings. Cultivars are selected for their flowers, growth habit, cold and/or disease resistance, and many other factors. There is no single system of classification for garden roses. In general, however, roses are placed in one of three main groups: Wild, Old Garden, and Modern Garden roses. Many thousands of rose hybrids and cultivars have been bred and selected for garden use; most are double-flowered with many or all of the stamens having mutated into additional petals. In the early 19th century the Empress Josephine of France patronized the development of rose breeding at her gardens at Malmaison.
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