Not the plant you're looking for? Search over 300,000 plants
Herbaceous Perennial

Dianella tasmanica

Tasman flax-lily

D. tasmanica is an evergreen perennial to 1.2m tall, with tough, grass-like leaves and branched panicles of violet-blue flowers 2cm wide, with prominent yellow stamens, followed by glossy violet-blue berries

Unlimited days out

Individual RHS membership from £47.25

Complete now
Buy this plant
Size
Ultimate height
1–1.5 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
Summer Blue Green
Autumn Green Blue
Winter Green
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing or East–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Asphodelaceae
Native to the UK
No
Foliage
Evergreen
Habit
Bushy
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

Correct

Plant range
SE Australia, Tasmania

How to grow

Cultivation

Grow in moderately fertile, humus-rich, well-drained, neutral to acid soil in a sheltered site in full sun or partial shade

Propagation

Propagate by seed in containers at 13-16°C (55-61°F) in spring. Divide rhizomes in mid-spring

Suggested planting locations and garden types
  • Coastal
  • Cottage and informal garden
  • City and courtyard gardens
  • Patio and container plants
  • Flower borders and beds
Pruning

No pruning required

Pests

Generally trouble free

Diseases

Generally trouble free

My Garden

Your free RHS gardening coach

Keep track of your plants with reminders & care tips – all to help you grow successfully

My plants
My calendar

My plants

My calendar

My ideas
Manage membership

My ideas

My advice

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.