Bougainvillea are characterized by vibrant colors on large petal-like bracts that surround the inconspicuous true flowers. Native to tropical South America, Bougainvillea are essentially scrambling shrubs that bloom most vigorously in hot, full sun. They should be planted near a fence, trellis or other structure where it can be trained to grow upwards or allowed to trail off a retaining wall, slope, or container. 'Barbara Karst' is a vigorous, showy vine or ground cover with bright magenta-red bracts produced in multiple flushes over a very long season from late spring through fall and often into winter. Color of bracts is affected by light intensity.