Water regularly during the growing season, allowing the soil to dry out slightly between waterings. Reduce watering significantly in winter, especially for potted plants, to prevent root rot.

Ensure good drainage to avoid waterlogging.

Prune in late winter or early spring before new growth begins to shape the plant and remove any dead, damaged, or crossing branches. Jerusalem Thorn tolerates heavy pruning well, which can be used to manage its size and encourage bushier growth.

Propagate by seeds sown in spring or through semi-hardwood cuttings taken in summer. Seeds may require stratification. Cuttings should be rooted in a well-draining medium with bottom heat for best results.

Both methods require patience.

Repot young plants annually in spring, and mature plants every 2-3 years as needed. Use a well-draining potting mix. Ensure the new pot is only slightly larger than the current one to avoid overwatering issues.

Refreshing the topsoil is often sufficient for established plants.