Raphia australis prefers consistently moist soil but dislikes waterlogged conditions. Water thoroughly when the top few centimeters of soil feel dry, especially during warmer months.

Reduce watering in cooler periods, allowing the soil to dry out slightly more between waterings to prevent root rot.

Pruning is generally minimal for Raphia australis. Remove only dead, damaged, or diseased fronds at the base to maintain a tidy appearance and prevent disease spread.

Avoid cutting healthy fronds, as they are essential for the palm's overall health and vigor.

Propagation is typically done by seed. Seeds require warm, moist conditions and consistent humidity to germinate. Soaking seeds in warm water for 24-48 hours before sowing can improve germination rates.

Patience is key, as germination can be slow and sporadic.

Young Kosi Palms may need repotting every 2-3 years as they outgrow their containers. Choose a pot that is only slightly larger than the current one. Repot in spring, using a well-draining potting mix.

Established palms rarely require repotting and prefer to be left undisturbed.