Dianthus caryophyllus
Dianthus caryophyllus, carnation or clove pink, is a species of Dianthus. It is probably native to the Mediterranean region but its exact range is unknown due to extensive cultivation for the last 2,000 years.
It is a herbaceous perennial plant growing to 80 cm tall. The leaves are glaucous greyish green to blue-green, slender, up to 15 cm long. The flowers are produced singly or up to five together in a cyme; they are 3–5 cm diameter, and sweetly scented; the original natural flower colour is bright pinkish-purple, but cultivars of other colours, including red, white, yellow and green, have been developed.
Some fragrance-less carnation cultivars are often used as boutonnieres for men.
Growing carnations
Carnations require well-drained, neutral to slightly alkaline soil, and full sun. Numerous cultivars have been selected for garden planting. Typical examples include 'Gina Porto', 'Helen', 'Laced Romeo', and 'Red Rocket'.
Colombia is the largest carnation producer in the world.
Colors
Carnations do not naturally produce the pigment delphinidin, thus a blue carnation cannot occur by natural selection or be created by traditional plant breeding. It shares this characteristic with other widely sold flowers like roses, lilies, tulips, chrysanthemums and gerberas.
Around 1996 a company, Florigene, used genetic engineering to extract certain genes from petunia and snapdragon flowers to produce a blue-mauve carnation, which was commercialized as Moondust. In 1998 a violet carnation called Moonshadow was commercialized. As of 2004 three additional blue-violet/purple varieties have been commercialized.
Etymology
Carnations were mentioned in Greek literature 2,000 years ago. "Dianthus" was coined by Greek botanist Theophrastus, and is derived from the Greek words for divine ("dios") and flower ("anthos"). Some scholars believe that the name "carnation" comes from "coronation" or "corone" (flower garlands), as it was one of the flowers used in Greek ceremonial crowns. Others think the name stems from the Latin "caro" (genitive "carnis") (flesh), which refers to the original colour of the flower, or incarnatio (incarnation), which refers to the incarnation of God made flesh.
Although originally applied to the species Dianthus caryophyllus, the name Carnation is also often applied to some of the other species of Dianthus, and more particularly to garden hybrids between D. caryophyllus and other species in the genus.
Source : http://en.wikipedia.org/wiki/Dianthus_caryophyllus
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