Cyperus alterniflorus thrives in consistently moist soil. Water regularly, ensuring the potting medium never dries out completely.

Allow the pot to stand in a shallow saucer of water, mimicking its natural wetland habitat. Reduce watering slightly in winter, but maintain dampness.

Prune to maintain shape and remove any dead or yellowing foliage. Cut back stems at the base. For overgrown plants, a more drastic trim to about 5-10 cm above the soil can rejuvenate them in spring.

Deadheading spent flower stalks is also beneficial.

Easily propagated by division of clumps in spring. Carefully separate mature plants into smaller sections, each with roots and shoots, and pot them individually.

Alternatively, seeds can be sown in moist conditions in spring, though division is generally more reliable.

Repot annually or biennially in spring, especially for young plants. Choose a pot one size larger than the current one. Use a well-draining, fertile potting mix, and ensure good drainage holes.

Water thoroughly after repotting.