Cool, moist conditions extend the season of C. tetragona into December but this is not a species which has stray flowers all the year. Bees have been seen crowding around at flowering time. After flowering, the calyces hang on for some weeks, shiny and saucer-shaped with long curling threads, turning golden bronze and purplish. The branches, now delicate and feathery, are as decorative as when they were in flower and will live in water almost until they dry out naturally. Propagation is by small cuttings of half-ripe tip growth.
Young plants are generally available from nurseries dealing in native species.
A garden position in sun or light shade is suitable, in well-drained lime free soil. During a severe outbreak of root rot, worsened by rains when the soil was periodically soggy, Calytrix suffered badly and many plants died. Some plants which suffered partial die-back have since recovered to make new growth. No other diseases or pests have been noticed.