Water regularly, keeping the soil consistently moist but not waterlogged. Reduce watering during cooler months when the plant's growth slows. Ensure good drainage to prevent root rot, especially in containers.

Overwatering is a common cause of issues for Hibiscus martianus.

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

Light pruning can encourage bushier growth and more abundant flowering.

Propagate from semi-hardwood cuttings taken in summer. Dip the cut end in rooting hormone and plant in a well-draining potting mix.

Keep the cuttings moist and warm, ideally in a propagation tray with bottom heat and high humidity.

Repot young plants annually in spring. Mature plants can be repotted every 2-3 years or when they become root-bound. Use a slightly larger pot with a good quality, well-draining potting mix.

Ensure the new pot has adequate drainage holes.