Lagerstroemia indica is the species that gave the genus its common name and its reputation. Native across a broad arc from the Philippines and Japan through the central Himalayas to southern China and Indochina, it was introduced to Western horticulture and spread rapidly through warm-temperate gardens around the world. The species epithet references India, its perceived origin, though the actual range is considerably wider. Its most distinctive features are its exfoliating bark, which peels back through the growing season to expose smooth tones of brown and gray, and its terminal flower panicles in shades of rose to red that appear from July through September. Cultivars extend the color range further, and rapid growth can carry plants from 6 to 30 feet depending on the selection.

Common crape myrtle needs full sun and moist, well-drained soil, though established plants tolerate occasional wet or dry spells with equanimity. A sheltered position protected from winter winds helps in the cooler reaches of its zone 6 to 9 range, and mulching over the root zone protects against frost. It resists deer, drought, and pollution — three of the more practical virtues a garden tree can possess — and propagates readily from seed or stem cuttings. The practice of hard topping, still widespread in American suburbs, is genuinely harmful: it produces weak, crowded regrowth with poor attachment and reduces flowering. Where size management is needed, selective thinning in late winter or early spring is the correct approach, and allows the tree's natural architecture to remain intact.