Propagation
Sow fresh seed during spring in a well-drained media and keep moist.

Divide rooted suckers during spring.
Take root cuttings during winter.

Culture
This plant requires little pruning, but older plants may be cut back hard to ground level, where new suckering growth appears.

Botanic information
Leaf: The leaves are narrow lanceolate to linear up to 35 mm (1⅜ in) wide and have a sharply pointed acuminate apex. They appear towards the end of the stems and are arranged spirally.

Flower: The purple tinged white crateriform flowers are arranged in a panicle that is held above the foliage on a tall scape. The flowering period may vary in tropical regions but they normally appear during early summer. 

Fruit: The small capsule is not normally seen and the seed produced is viable.  The flowers may need to be hand pollinated to produce seeds. This plant is normally reproduced vegetatively.