Water Sison amomum regularly, keeping the soil consistently moist but not waterlogged. Allow the top inch of soil to dry slightly between waterings, especially during warmer months.

Reduce watering frequency during the dormant winter period to prevent root rot, ensuring good drainage.

Prune Sison amomum lightly in late winter or early spring before new growth begins. Remove any dead, damaged, or crossing branches to maintain shape and promote air circulation.

Heavy pruning is generally not required, as the plant has a naturally shrubby habit.

Propagate Sison amomum from seeds sown in spring or from semi-hardwood cuttings taken in summer. Seeds require stratification and may take time to germinate.

Cuttings should be rooted in a well-draining medium, often requiring bottom heat to encourage root development.

Repot Sison amomum every 2-3 years, or when the plant becomes root-bound. Use a well-draining potting mix. Spring is the ideal time to repot, after the risk of frost has passed.

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