Thalia multiflora thrives in consistently moist soil. Water thoroughly whenever the top few centimeters of soil begin to feel dry. Avoid letting the soil completely dry out, especially during warmer months.

In wetter conditions, ensure good drainage to prevent root rot. Reduce watering slightly in cooler periods.

Prune Thalia multiflora in late winter or early spring before new growth emerges. Remove any dead, damaged, or overcrowded stems. This encourages vigorous new growth and maintains a tidy appearance.

Cut stems back to the ground level or to a desired height. Minimal pruning is usually required.

Propagate Thalia multiflora by division. In spring, carefully dig up the plant and divide the rhizomatous root system into sections, ensuring each section has at least one bud or shoot.

Replant divisions immediately into well-draining soil and water thoroughly to encourage establishment.

Thalia multiflora generally does not require frequent repotting, as it prefers to be slightly root-bound. If repotting becomes necessary, usually every 2-3 years, do so in spring.

Choose a pot only slightly larger than the current one and use a good quality, well-draining potting mix. Water well after repotting.