Yellow elder, also called Tecoma stans, is a fast-growing shrub reaching 20 to 30 feet tall and just as wide in some cases. The shrub is hardy in USDA regions 10 and 11, where the temperature does not drop below 30 degrees Fahrenheit, but some sources say it will also survive in USDA zone 9, where it will receive some cold injury. Knowledge of how to create the right environment for yellow elder will help you create a healthy plant.
Plant yellow elder in full sun and basically any type of well-drained soil. The plant will grow well in clay, sand, loam, alkaline and acidic soil.
Water yellow elder regularly, keeping it moist until it starts growing vigorously. The plant is only moderately drought-tolerant. It will, in most cases, survive on rainwater alone, but watering once a week in dry months will help it thrive.
Fertilize once a month with a complete, all-purpose fertilizer during the growing season. This and watering will encourage vigorous blooming.
Prune hard in the winter when the plant is dormant. Use pruning shears and clip away branches to control height and increase stiffness of upper branches.