The fruit is a three-celled capsule with each cell containing several blackish seeds. Fruits mature quickly, splitting open when ripe and releasing the small seeds. Empty capsules persist on the plant for some time and these should not be mistaken for seeds when seed collecting. This species is suited to most reasonably well-drained soils and requires little attention once plants are established. In the Australian National Botanic Gardens specimens have survived for ten years and more in a sometimes dry soil.
Plants grow equally well in full sun or in a semi-shaded area.
The latter situation seems to lengthen their flowering period. The species may be propagated from cuttings or seed but germination percentage is usually low. Only minimum pruning is necessary to maintain the plant in a bushy condition and it is ideal for cut flowers. No diseases or any real damage by insects have been recorded on this species in the Canberra Gardens.