Bougainvillea is a South American scrambling shrub from the Nyctaginaceae family that thrives in warm climates (zones 9-11) as a spectacular vine or ground cover. These plants grow 15 to 40 feet tall and wide, producing showy flowers in full sun with moderate watering and well-drained, acidic soil. In tropical and warm-temperate regions, bougainvillea earns its reputation as a dramatic climber; in cooler zones, gardeners grow it as a seasonal annual, bringing plants indoors before frost or treating it as a temporary seasonal display.
Full Sun
Moderate
9-11
480in H x 480in W
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High
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The true magic lies not in the flowers themselves but in the papery, colorful bracts that surround them, creating the spectacular show bougainvillea is famous for. These plants thrive on neglect once established, tolerating hot, dry locations with remarkable resilience while flowering bountifully in full sun. The stems carry 1 to 2 inch thorns at the leaf axils, a distinctive feature that demands respect during pruning but also adds architectural presence to the plant. Foliage ranges from evergreen to deciduous depending on species and climate, giving you flexibility in how you design with this vigorous grower.
Bougainvillea is grown primarily as an ornamental in warm climates, where it serves as a spectacular climber on trellises, pergolas, and walls. In regions with harsh winters, gardeners grow it as a seasonal annual, moving container-grown plants indoors before the first frost. Its vigorous, thorny growth habit makes it useful as a dramatic screen or living fence in frost-free zones.
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Bougainvillea tolerates trimming well and benefits from regular pruning to maintain shape and direct growth along its support structure. Exercise caution when pruning to avoid injury from the prominent 1 to 2 inch thorns positioned at the leaf axils. Pruning becomes especially important in container growing or when training the plant as a seasonal annual.
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“Bougainvillea belongs to a genus of 14 species native to South America, where these scrambling shrubs evolved as vigorous climbers and ground covers in warm regions. The plant made its journey from the tropics to become a signature element of Mediterranean and subtropical gardens worldwide, appearing as a cultivated ornamental in warm-temperate to tropical areas across Europe, Africa, and beyond. The genus carries its botanical name as a lasting tribute to its origins and identity.”