Water Tristaniopsis merguensis regularly during its active growth period, especially when young. Allow the top few centimeters of soil to dry out between waterings.

Reduce watering in cooler months, but do not let the soil become completely arid. Ensure good drainage to prevent waterlogging, which can lead to root rot.

Prune Tristaniopsis merguensis to shape the tree, remove dead or diseased branches, and improve air circulation. Light pruning can be done at any time of year.

For more significant shaping, prune in late winter or early spring before new growth begins. Avoid heavy pruning, as it can stress the plant.

Propagate Tristaniopsis merguensis from semi-hardwood cuttings taken in summer or autumn. Select healthy shoots, remove lower leaves, and dip the cut end in rooting hormone.

Plant the cuttings in a well-draining propagation mix and keep them moist and in a warm, humid environment until they root.

Repot Tristaniopsis merguensis every 2-3 years, or when root-bound. Use a well-draining potting mix, such as a blend of potting soil, perlite, and bark. Repot in spring before the start of the growing season.

Choose a pot that is only slightly larger than the current one to avoid overwatering issues.