Water Japanese Glorybower regularly, keeping the soil consistently moist but not waterlogged. Allow the top inch of soil to dry out slightly between waterings.

Reduce watering in winter when the plant is less active to prevent root rot. Ensure good drainage to avoid soggy conditions.

Prune Clerodendrum japonicum in late winter or early spring before new growth begins. Remove dead, damaged, or crossing branches. You can also prune to shape the plant and encourage bushier growth.

Pruning after flowering can help maintain a neat appearance and stimulate future blooms.

Propagate Japanese Glorybower from stem cuttings taken in spring or summer. Select healthy, non-flowering shoots, cut them to about 10-15 cm, and remove lower leaves.

Dip the cut end in rooting hormone and plant in moist, well-draining potting mix. Keep humid and warm until roots form.

Repot Clerodendrum japonicum every 2-3 years, or when it becomes root-bound. The best time to repot is in early spring.

Choose a pot that is one size larger than the current one and use a good quality, well-draining potting mix. Water thoroughly after repotting.