Bougainvillea x buttiana
Light: Full sun; at least 6 hours daily for strong flowering. In Phoenix, light afternoon shade can benefit container plants exposed to intense reflected heat.
Water: Low to moderate once established. Water deeply, then let the soil dry substantially before watering again. New plants and containers need more frequent watering during Phoenix summers.
Soil: Well-drained sandy or gravelly soil; tolerates alkaline conditions. Avoid poorly drained sites and use a freely draining potting mix in containers.
Mature size: Typically 15–25 feet tall with support and 10–20 feet wide; cultivar, frost, and pruning influence size.
Bloom: Repeated flowering cycles from spring through fall; may continue into winter in warm, frost-protected locations.
Evergreen / deciduous: Evergreen in frost-free conditions; may lose leaves during cold weather or drought in Phoenix.
Growth rate: Fast during warm weather with adequate water.