Bougainvillea Flowering Time ((top))

| Climate | Typical Bloom Season | Notes | | :--- | :--- | :--- | | | Year-round, with peaks in winter and spring | Minimal temperature variation; flowering cycles every 6 weeks. | | Subtropical (e.g., Southern California, Mediterranean) | April to November (warm months) | Blooms heavily in spring and autumn; may pause in intense summer heat. | | Temperate / Cool (e.g., UK, Northern US) | Summer only (June-September) | Grown in containers; must be moved indoors for winter; blooms only when outdoors in full sun. | | Desert (e.g., Arizona, Middle East) | Spring (March-May) and Autumn (September-October) | Avoids peak summer (115°F+). Will bloom again when nights cool. |

: Flowers typically appear in flushes that last 3 to 6 weeks . Under ideal conditions, a single cycle can extend to 4–6 weeks or longer. bougainvillea flowering time