Keep the soil consistently moist during the growing season, especially when in bloom. Reduce watering significantly as the foliage begins to yellow and die back, signaling dormancy.

Ensure good drainage to prevent waterlogged conditions which can lead to root rot.

Remove spent flower stalks as they fade to encourage further blooming and prevent seed formation. Cut back yellowed or dead foliage at the end of the growing season to tidy the plant and prepare it for dormancy.

Use clean tools to prevent disease spread.

Propagate by dividing rhizomes in late winter or early spring before new growth begins. Ensure each division has at least one bud or eye.

Alternatively, collect seeds from mature flower pods, but note that seedlings may not come true to type and take longer to bloom.

Repot rhizomes every 2-3 years, or when they become crowded. This is best done in late winter or early spring before active growth commences.

Use a well-draining potting mix, and plant rhizomes about 5-10 cm deep with the growing point facing upwards.