It is a hardy plant, growing to a height and width of around 1 meter with grass-like strappy leaves.

[3] Dianella caerulea is highly variable species, with many forms found throughout eastern Australia.

[5] The species is described as having seven varieties, having been revised by Queensland botanist Rod Henderson in 1987 for the Flora of Australia: Dianella caerulea is a strappy herbaceous fruit bearing plant to about 1 metre (3 ft) high, with a thick spreading rhizome under the ground.

The small (1-1.6 cm diameter) flowers bloom in spring and summer (August to January); the perianth is pale to a dark blue, or green-blue, and the anthers at the centre are yellowy brown.

[16] The berries can be harvested in late summer or early autumn as soon as they turn a royal blue color.