Thursday, September 26, 2013

Bougainvillea

Cultivation and uses




Bougainvilleas are popular ornamental plants in most areas with warm climates. Locarno in Switzerland, with its mild Mediterranean climate, is famous for its bougainvilleas.hough it is frost-sensitive and hardy in U.S. Hardiness Zones 9b and 10, bougainvillea can be used as a houseplant or hanging basket in cooler climates. In the landscape, it makes an excellent hot season plant, and its drought tolerance makes it ideal for warm climates year-round. Its high salt tolerance makes it a natural choice for color in coastal regions. It can be pruned into a standard, but is also grown along fence lines, on walls, in containers and hanging baskets, and as a hedge or an accent plant. Its long arching thorny branches bear heart-shaped leaves and masses of papery bracts in white, pink, orange, purple, and burgundy. Many cultivars, including double-flowered and variegated, are available.
Many of today's bougainvillea are the result of interbreeding among only three out of the eighteen South American species recognized by botanists. Currently, there are over 300 varieties of bougainvillea around the world. Because many of the hybrids have been crossed over several generations, it is difficult to identify their respective origins. Natural mutations seem to occur spontaneously throughout the world; wherever large numbers of plants are being produced, bud-sports will occur. This had led to multiple names for the same cultivar (or variety) and has added to the confusion over the names of bougainvillea cultivars.
The growth rate of bougainvilleas varies from slow to rapid, depending on the variety. They tend to flower all year round in equatorial regions. Elsewhere, they are seasonal, with bloom cycles typically four to six weeks. Bougainvilleas grow best in dry soil in very bright full sun and with frequent fertilization; but they require little water once established, and act will not flourish if over-watered. They can be easily propagated via tip cuttings.
The bougainvillea is also a very attractive species for Bonsai enthusiasts, due to their ease of training and their radiant flowering during the spring. They can be kept as indoor houseplants in temperate regions and kept small by bonsai techniques.
The hybrid cultivar B. × buttiana 'Poulton's Special' has gained the Royal Horticultural Society's Award of Garden Merit

Symbolism and nomenclature

Various species of Bougainvillea are the official flowers of Guam (where it is known as the Puti Tai Nobiu); Lienchiang and Pingtung Counties in Taiwan; Ipoh, Malaysia; the cities of Tagbilaran, Philippines; Camarillo, California; Laguna Niguel, California; San Clemente, California; the cities of Shenzhen, Huizhou, Zhuhai, and Jiangmen in Guangdong Province, China; and Naha, Okinawa.
Native to South America, Bougainvillea carries several names in the different regions where it is expontaneously present. Apart from Rioplatense Spanish santa-rita and Peruvian Spanish papelillo, it may be variously named primavera, três-marias, sempre-lustrosa, santa-rita, ceboleiro, roseiro, roseta, riso, pataguinha, pau-de-roseira and flor-de-papel in Brazilian Portuguese. Nevertheless, buganvílea in Portuguese and buganvilia  in Spanish are the most common names accepted by people of the regions where these languages are spoken but it is an introduced plant.

Toxicity

The sap of the Bougainvillea can cause serious skin rashes, similar to Toxicodendron species.

Gallery

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