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Herbaceous Perennial

Dierama galpinii

An evergreen, clump-forming, perennial with linear, green to blue-green leaves up to 1m long and erect to arching flower stems to 1.5m tall in summer bearing upward-facing, purple to pink flowers

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Size
Ultimate height
1–1.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained, Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Blue
Summer Pink Purple Green Blue
Autumn Green Blue
Winter Green Blue
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H4
Botanical details
Family
Iridaceae
Native to GB / Ireland
No
Foliage
Evergreen
Habit
Columnar upright
Genus

Dierama are evergreen, clump-forming cormous perennials with long, narrow leaves and slender arching stems bearing nodding, bell-shaped flowers in summer

Name status

Correct

How to grow

Cultivation

Grow in humus-rich, well-drained soil in a sheltered situation with full sun; see Dierama cultivation for further information

Propagation

Propagate by seed in containers in a cold frame as soon as ripe. They may resent disturbance so leave until really congested before division of clumps in spring. Do not allow the clumps to dry out. They may take 1-2 years to flower freely again

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

Tidy any winter-damaged foliage by cutting to the base in spring

Pests

Generally pest-free

Diseases

Generally disease-free

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