The seed pods are long and slender, about 100 mm long containing a number of seeds. Good drainage is essential. H.australis is also suited to growing in containers and hanging baskets as it seems tolerant of root constraint. Flowering is best if good light is available but the plant will grow in reasonably heavy shade. H.australis can be grown from fresh seed, which requires no pretreatment.
Cuttings also strike readily.
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