Saturday 22 June 2013

Bougainvillea!!!!


The Bougainvillea is an immensely showy, odoriferous and hardy plant.  Virtually pest-free and disease resistant, it rewards its owner with an abundance of color and vitality when it is well looked after.  The bougainvillea’s versatility is legendary.  It can be coaxed into a small manageable pot plant or a sizable tree, to spread itself vertically on a wall, or climb up a trellis and form a luscious crown or burst forth into graceful arches.  It makes one of the best hedges, bushes, and curb-liners.  And as for bonsai or topiary purposes, it has few equals, lending its complex branching to the pruning shears, which promote even more unique and graceful forms.  It is probably true to say that without the bougainvillea, our roads, parks, and private gardens would be a lot less colorful that what we see today.  Almost everywhere we go, its brilliant hues and cheerful bursts punctuate the lush green mantle that cloaks our tropical environment.  Other flowering plants certainly pale in comparison. 
Along with palms, sunshine, and beaches, the cascading blooms of bougainvillea provide one of Florida’s signature tropical images. As a profuse bloomer, bougainvillea is most striking during the winter, when it is at its peak and few other plants are able to provide color. Although it is frost-sensitive and hardy in 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 bougainvillea ideal for warm climates year-round. Native to the coasts of Brazil, bougainvillea has a high salt tolerance, which makes it a natural choice for south Florida and other coastal regions. As a woody clambering vine, bougainvillea will stand alone and can be pruned into a standard, but it is perfect along fence lines, on walls, in containers and hanging baskets, and as a hedge or an accent plant. Its long arching branches are thorny, and bear heart-shaped leaves and masses of papery bracts in white, pink, orange, purple, and burgundy. Many cultivars, including double flowered and variegated, is available.

History of Bougainvillea

A native to coastal Brazil, the bougainvillea was discovered in 1768 in Rio DE Janine by French naturalist Dr. Philibert Commerçon (also sometimes spelled Commerson).  The plant is named after his close friend and ship’s admiral Louis-Antoine DE Bougainvillea  who commanded the ship La Boudeuse that sailed around the world between 1766-1769, and in which Commerçon was a passenger.
Twenty years after Commerçon’s discovery, it was first published as ‘Buginvillea’ in Genera Plantarium by A.L. de Jusseau in 1789.  The genus was subsequently split in several ways until it was finally corrected to ‘Bougainvillea’ in the Index Kewensis in the 1930s.  Originally, B. spectabilis and B. glabra were hardly differentiated until the mid 1980s when botanists recognized them to be totally distinct species.  In early 19th century, these two species were the first to be introduced into Europe, and soon, nurseries in France and England did a thriving trade providing specimens to Australia and other faraway countries.  Meanwhile, Kew Gardens distributed plants it had propagated to British colonies throughout the world.  Soon thereafter, an important event in the history of bougainvillea took place with the discovery of a crimson bougainvillea in Cartagena, a Spanish port in the Mediterranean, by Mrs. R.V. Butt.  Originally thought to be a distinct species, it was named B. buttiana in her honour.  However, it was later discovered to be a natural hybrid of a variety of B. glabra and possibly B. peruviana – a “local pink bougainvillea” from Peru.  Natural hybrids were soon found to be common occurrences all over the world.  For instance, around the 1930s, when the three species were grown together, many hybrid crosses were created almost spontaneously in East Africa, India, the Canary Islands, Australia, North America, and the Philippines

Growth Cycles

The bougainvillea has two distinct growth cycles:
  1. A vegetative growth period for several weeks — when new leaves and stems grow.  If the plant receives enough sunlight, the plant will form buds during this time. If there is not enough sunlight, the plant will remain in vegetative cycle and not progress to the blooming period.  This is usually the case if bougainvillea are grown as houseplants or brought indoors to winter-over.
  2. A blooming period of several weeks when little or no vegetative growth occurs.  The length of time they will display color is dependent upon the health of the plant and the environment they are in; the more sun and heat, the better.  With at least 5 hours of direct sunlight per day, a typical, healthy bougainvillea will remain in a blooming period for 3 to 5 weeks.