Strombosia grandifolia prefers consistently moist soil but dislikes waterlogging. Water thoroughly when the top 2-3 cm of soil feels dry. Reduce watering slightly during cooler, dormant periods to prevent root rot.

Ensure good drainage in pots and the ground.

Prune Strombosia grandifolia to maintain desired shape and size, or to remove any dead, damaged, or crossing branches.

Light pruning can be done anytime, but heavier pruning is best performed in late winter or early spring before new growth begins. Use clean, sharp tools.

Strombosia grandifolia can be propagated from seeds sown in spring, requiring warm temperatures for germination. Stem cuttings can also be taken during the growing season.

Ensure cuttings are treated with rooting hormone and kept in a humid environment until established.

Repot Strombosia grandifolia every 2-3 years or when it becomes root-bound. Use a well-draining potting mix. Choose a pot that is only slightly larger than the current one to avoid over-watering issues.

Repot in spring before the active growth period.