It has long grey-green leaves which grow in clumps from an underground rhizome, and displays blue-purple flowers in spring-summer, up to 90 cm in height.

[1] The slender, grey-green leaves of Dianella amoena have a V-shaped cross section, and generally exhibit peg-like projections or “teeth” along the leaf midrib and margins.

[1] It is clonal, meaning one plant or colony consists of multiple genetically identical ramets connected via a rhizome, and it is capable of both vegetative (asexual), and sexual reproduction.

[6][7] The species exists in small fragments of its original range in roadsides, railways, and urban nature reserves, often in degraded habitats.

The extensively rhizomatous nature of the species makes accurate population estimation difficult, as genetically distinct plants cannot be easily distinguished.

[4] The species has also been subject to numerous translocations, both for conservation and development mitigation purposes, which may have impacted total population size.