Water Dianthus chinensis regularly, especially during dry periods, to maintain consistently moist but not waterlogged soil. Allow the top few centimetres of soil to dry out slightly between waterings. Reduce frequency in cooler weather or if grown as a perennial during dormancy. Ensure good drainage to prevent root rot.

Deadhead spent flowers regularly to encourage continuous blooming and prevent self-seeding. A light trim after the main flush of blooms can rejuvenate the plant and promote a bushier habit. For perennial types, cut back faded foliage in late autumn or early spring to maintain vigour and neatness. This also helps improve air circulation.

Propagate Dianthus chinensis easily from seeds sown indoors 6-8 weeks before the last frost or directly outdoors after the danger of frost has passed. Cuttings can also be taken from non-flowering stems in late summer for perennial varieties, rooting them in a moist, well-draining medium. Division of clumps is possible for older perennial plants to rejuvenate them.

As Dianthus chinensis is often grown as an annual, repotting is usually not necessary beyond its initial transplanting into a larger container or garden bed. For perennial types grown in pots, repot every 1-2 years into a slightly larger container with fresh, well-draining potting mix to refresh nutrients and accommodate root growth. This ensures continued health and blooming.