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Herbaceous Perennial

Dianella tasmanica Tasred ('Tr20'PBR)

Tasman flax lily [Tasred]

An evergreen perennial to around 50cm high, forming clumps of wide, strappy, stiff green leaves with rough edges, that take on a reddish-pink tint at the base in cooler temperatures. In summer, produces sprays of star-shaped blue-purple flowers on delicate stems, followed by deep blue berries

Synonyms
Dianella tasmanica 'Tr20'PBR
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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Pink Red
Summer Blue Purple Green
Autumn Green Pink Red Blue
Winter Green Pink Red
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing

Exposure
Exposed or Sheltered
Drought resistance
Yes
Hardiness
H3
Botanical details
Family
Asphodelaceae
Native to GB / Ireland
No
Foliage
Evergreen
Habit
Clump forming
Potentially harmful
Fruit are ornamental - not to be eaten. Wear gloves and other protective equipment when handling
Genus

Dianella are rhizomatous evergreen perennials with leathery, sword-shaped leaves and sprays of small, starry deep blue flowers followed by long-lasting blue or purple berries

Name status

Trade

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How to grow

Cultivation

In milder areas, grow outdoors in moderately fertile, well-drained, neutral to acid soil in full sun or partial shade. In areas prone to hard frosts, grow under glass in peat-free, loam-based compost, in full light with shade from hot sun. Water well in growth and keep just moist in winter.

Propagation

Propagate by division in spring. As this plant is protected by Plant Breeders' Rights, any propagation should be for personal rather than commercial use

Suggested planting locations and garden types
  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Gravel garden
  • Patio and container plants
  • Low Maintenance
  • Conservatory and greenhouse
Pruning

Trim old leaves as necessary

Pests

Generally pest-free

Diseases

Generally disease-free

Get involved

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