Barbara Karst Bougainvillea is a woody, tropical, climbing vine that shows off a mass of hot pink color from late spring into fall. As a perennial, this bougainvillea, is an evergreen in frost free climates but is durable in colder climates as well, and will return yearly with plenty of warm weather. It grows quickly with a mature height at approximately 20 ft. tall, and preforms best when planted alongside a trellis or fence, or when allowed to trail off from hanging baskets or slope. It can be pruned at any time. It prefers full sunlight (6 plus hours) and dry to average moisture levels. Drought tolerant and hardy, this makes Barbara Karst Bougainvillea a stress free and low maintenance beauty. Outdoor landscaping, container gardens, and hanging baskets Bougainvillea x buttiana Barbara Karst.