Q: How is 'La Jolla' different from other red bougainvilleas?
A: Its key distinction is its compact, shrubby growth habit. While many red varieties are large, aggressive climbers, 'La Jolla' matures at just 4-5 feet tall, making it manageable in small gardens and containers . Its bushy form also means it requires significantly less pruning to maintain its shape .
Q: How much sun does it need to bloom so prolifically?
A: Full, direct sun is essential . It requires a minimum of 5-6 hours of direct sun daily, and more is better. In too much shade, it will produce lush green foliage at the expense of its signature red bracts .
Q: How often should I water it?
A: Water deeply but infrequently, allowing the soil to dry out completely between waterings . Bougainvilleas, including 'La Jolla', flower best when slightly stressed by dryness. Overwatering will lead to excessive foliage growth, fewer flowers, and can cause root rot .
Q: Is it cold hardy?
A: It is reliably hardy outdoors in USDA zones 9-11 . It can tolerate brief light frosts down to about 30-32°F, but is damaged by hard freezes. In zone 9, plant in a protected location. In colder zones, it must be grown in a container and moved indoors to a very bright, cool spot for the winter .
Q: How should I prune it?
A: Prune immediately after a major bloom cycle to shape and control size . It blooms on new wood, so light pruning encourages branching and more flowers. Wear thick gloves and long sleeves to protect yourself from its thorns . Avoid heavy pruning in fall, as this removes wood that would bloom the following spring .