Mussaenda nannanii prefers consistently moist soil, but avoid waterlogging. Water thoroughly when the top 2-3 cm of soil feels dry.

Reduce watering slightly during winter dormancy to prevent root rot, but never allow the soil to dry out completely. Ensure good drainage to prevent issues.

Prune Mussaenda nannanii in late winter or early spring before new growth begins. Remove any dead, damaged, or crossing branches. Pruning can also be used to shape the plant and encourage bushier growth.

Light pruning can be done after flowering to maintain form.

Propagate Mussaenda nannanii from semi-hardwood cuttings taken in late spring or early summer. Select healthy stems, take 10-15 cm cuttings, and dip the cut end in rooting hormone.

Plant in a well-draining potting mix and keep moist and humid, ideally in a propagator.

Repot Mussaenda nannanii every 2-3 years, or when it becomes root-bound. The best time to repot is in spring before the active growing season commences.

Use a well-draining potting mix and choose a pot only slightly larger than the current one to avoid overwatering issues.