Overview
Dianella tasmanica is a bushy herbaceous perennial in the genus Dianella, part of the Asphodelaceae family, with evergreen foliage. It typically grows around 1-1.5 metres tall and 0.1-0.5 metres wide, reaching full size in around 2-5 years. Dianella tasmanica grows best in full sun and partial shade, and tolerates loam and sand soils and acid and neutral pH.
About
Dianella tasmanica, commonly known as the Tasman flax-lily or Tasmanian flax-lily, is a herbaceous strappy perennial herb of the family Asphodelaceae, subfamily Hemerocallidoideae, found in southeastern Australia including Tasmania. Its leaves are up to 80 centimetres (30 inches) in length, and the flower stem is up to 1.5 m (4 ft 11 in) tall. Blue flowers in spring and summer are followed by violet berries. It adapts readily to cultivation and is commonly seen in Australian gardens. In the wild it grows across New South Wales, Tasmania, Victoria and ZA. It grows to around 1-1.5 metres tall and 0.1-0.5 metres wide, carrying evergreen foliage. Grow it in full sun and partial shade and loam and sand soil. It tolerates acid and neutral soils, well-drained conditions and south-facing, west-facing and east-facing aspects.
Wikipedia contributors, CC BY-SA 4.0 — Dianella tasmanica
Growing conditions
Best soil and position for Dianella
- Sunlight
- Full sun, Partial shade
- Soil type
- Loam, Sand
- Soil pH
- Acid, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Sheltered
Plant details
Dianella tasmanica size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Bushy
- Foliage
- Evergreen
- Height
- 1-1.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
Frequently asked questions
Where is the best place to plant Dianella tasmanica?
Dianella tasmanica prefers full sun and partial shade. It suits sheltered positions.
What soil does Dianella tasmanica need?
Dianella tasmanica grows best in loam and sand soil. It prefers acid and neutral soil. Aim for soil that stays well-drained.
How big does Dianella tasmanica grow?
Dianella tasmanica reaches a height of 1-1.5 metres and a spread of 0.1-0.5 metres. It takes around 2-5 years to reach full size.
More in the Dianella genus
- Dianella caerulea 'Becca'

- Dianella caerulea 'Caspar Blue'

- Dianella intermediaTurutu
- Dianella nigraNew Zealand blueberry

- Dianella revoluta

- Dianella tasmanica 'Variegata' (v)Tasman flax-lily 'Variegata'

- Dianella caerula 'Proquest D3'PBR
- Dianella ensifoliaumbrella dracaena
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