Robinia pseudoacacia is highly drought-tolerant once established. Water young trees regularly during their first few years to ensure good root development. Avoid overwatering, as this can lead to root rot.

Allow the soil to dry out between waterings.

Pruning is best done in late winter or early spring before new growth begins. Remove any dead, damaged, or crossing branches. Black locust can sucker vigorously, so prune suckers at the base to maintain desired form.

Minimal pruning is usually required after establishment.

Seeds can be propagated by scarifying them (e. g. , nicking or soaking in hot water) and sowing in spring. Root cuttings or suckers can also be taken in late winter or early spring.

Grafting is another method for specific cultivars.

Repotting is generally not applicable to Robinia pseudoacacia as it is a large tree intended for outdoor planting.

If grown as a container specimen for a temporary period, repot into a larger container in spring as needed, using well-draining soil. Ensure adequate root space.