Bougainvillea Plant Guide

Bougainvillea

Explosive tropical color for walls, fences, and containers. Bougainvillea produces masses of vibrant pink, purple, orange, and red bracts for months.

Quick Facts

Hardiness Zones9-11 (containers in colder zones)

SunFull sun (8+ hours)

WaterLow once established

SoilWell-drained, slightly acidic

Height10-30 feet (climbing)

Spread6-15 feet

Bloom TimeSpring through fall in warm climates

Climbing on wallsContainersMediterranean gardensTropical gardensColor accentArbors

Why Grow Bougainvillea

No plant delivers more color per square foot than bougainvillea. When in bloom, the plant is almost entirely covered in vivid papery bracts that last for weeks — the tiny white flowers inside are almost invisible. A bougainvillea cascading over a white wall is the quintessential Mediterranean-tropical image. It's also surprisingly drought-tolerant and nearly pest-free.

Best Varieties

'Barbara Karst' is the classic bright red-magenta. 'Royal Purple' produces deep violet-purple bracts. 'Gold Rush' offers golden-yellow color unusual in climbers. 'Singapore Pink' has soft pastel pink bracts. Dwarf varieties like 'Helen Johnson' and 'Bambino' series stay compact for containers. 'Torch Glow' grows as an upright shrub rather than a vine.

Getting Maximum Blooms

Bougainvillea blooms best when slightly stressed. Full sun is essential — 8+ hours of direct sunlight. Let the soil dry between waterings — overwatering produces leaves at the expense of flowers. Use a low-nitrogen, high-phosphorus fertilizer to promote blooming. Slight root-binding in containers actually encourages heavier flowering.

Growing in Cold Climates

In zones below 9, grow bougainvillea in containers. Use a 14-20 inch pot, place in your sunniest spot, and bring indoors before first frost. Overwinter in a cool, bright room — it may drop leaves but will recover in spring. Treat as a seasonal patio plant: stunning outdoors May through October, dormant indoors over winter.

Companion Plants

Bougainvillea pairs beautifully with:

JasmineOlive treeLavenderAgapanthusPlumbago

Frequently Asked Questions

Why isn't my bougainvillea blooming?

Not enough sun (needs 8+ hours), too much water, or too much nitrogen fertilizer. Bougainvillea blooms best when slightly stressed — let it dry out and use bloom-boosting fertilizer.

Is bougainvillea poisonous?

Bougainvillea is not toxic to humans or pets. However, it has sharp thorns that can scratch, so wear gloves when pruning and place it away from walkways and play areas.

Can bougainvillea survive frost?

Bougainvillea is damaged below 30°F and killed below 25°F. In frost-prone areas, grow in containers and bring indoors. Established plants in zone 9 may survive brief light frosts if protected.

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