Keep the soil consistently moist but not waterlogged, especially during the growing season. Water thoroughly when the top inch of soil feels dry.

Reduce watering in winter, allowing the soil to dry out slightly between waterings to prevent root rot. Ensure good drainage.

Prune after flowering to remove spent flower stalks and any dead or damaged foliage. This encourages new growth and helps maintain a tidy appearance.

Heavy pruning can be done in late winter or early spring before new growth emerges to manage size and shape.

Propagate by division of rhizomes in spring. Carefully separate sections of the rhizome, ensuring each piece has at least one growth bud. Plant these divisions in well-draining potting mix.

Alternatively, seeds can be sown, but division is generally more reliable.

Repot Hedychium gardnerianum every 2-3 years, or when the plant becomes root-bound. Spring is the ideal time for repotting, just as new growth begins.

Use a larger pot and a fresh, well-draining potting mix to provide adequate space for root development.