Water Oreopanax arcanus thoroughly when the top 2-3 cm of soil feels dry. Avoid overwatering, as this can lead to root rot. Reduce watering in winter, allowing the soil to dry out more between waterings.

Ensure good drainage to prevent waterlogging.

Prune Oreopanax arcanus to maintain its shape and size, or to remove any dead or damaged branches. Light pruning can be done anytime, but heavier pruning is best performed in spring before new growth begins.

Use clean, sharp pruning tools for a neat cut.

Propagate Oreopanax arcanus from stem cuttings taken in spring or summer. Use a rooting hormone to encourage root development. Plant cuttings in a well-draining potting mix and keep them moist and warm.

They may take several weeks to root.

Repot Oreopanax arcanus every 2-3 years, or when it becomes root-bound. Choose a pot that is slightly larger than the current one. Use a well-draining potting mix.

Repotting is best done in spring before the active growing season begins.