Bougainvillea #2

by Robert Bales

Title

Bougainvillea #2

Artist

Robert Bales

Medium

Photograph - Photo

Description

We have these as a shade plant along our house in Yuma Arizona.

Bougainvilleas are popular ornamental plants in most areas with warm climates. Locarno in Switzerland, with its mild Mediterranean climate, is famous for its bougainvilleas.

Although 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 in fact 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.

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February 25th, 2015

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