About
Dianella tasmanica, the Tasman flax-lily, is an evergreen, long-lived perennial to around 1.2 m with tough, grass-like leaves and branched sprays of violet-blue, 2 cm flowers with prominent yellow stamens in summer, followed by shining violet-blue berries. One of the most ornamental and garden-worthy dianellas for a sunny or partly shaded mild border.
About the genus
Dianella are rhizomatous, evergreen perennials with leathery, sword-shaped leaves and sprays of small, starry blue flowers followed by long-lasting blue or purple berries. Popular as clump-forming ground-cover plants in mild gardens and as container plants.
Growing conditions
SunlightFull sun, Partial shade
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectSouth-facing, East-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH5
Plant details
Plant typeShrubs
HabitBushy
FoliageDeciduous
Height1-1.5 metres
Spread1-1.5 metres
Time to full height5-10 years
Suggested usesCoastal, City and courtyard gardens, Cottage and informal garden
Native toSW China
Care notes
CultivationGrow in fertile moist soil in sun or partial shade
PruningPruning group 2
PropagationPropagate by softwood cuttings in summer
Pest resistanceGenerally pest-free
Disease resistanceMay be susceptible to honey fungus