Libertia sessiliflora 'Caerulescens'

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Synonyms

Libertia caerulescens

Herbaceous Perennial
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An evergreen perennial, with fans of stiff, broadly sword-shaped green leaves. In late spring and early summer, produces clusters of pale blue flowers, tightly pressed to upright stems. These are followed by oblong capsules filled with small black seeds in autumn

Position

Full sun

Soil Types

Chalk, Clay, Loam

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Clay Loam
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H3

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Iridaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Clump forming, Columnar upright
Genus
Libertia are clump-forming perennials with grass-like, evergreen leaves and panicles of saucer-shaped white or blue flowers, followed by orange seed capsules
Name Status
Accepted
Plant Range
Chile

How to Grow

Cultivation

Grow in moderately fertile, moist but well-drained soil in full sun. Needs a warm sunny position and a dry mulch for protection in winter

Propagation

Propagate by seed or by division in spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Gravel garden
  • Patio and container plants
  • Prairie planting
  • Flower borders and beds

Pruning

Remove flower stalks near the base after flowering. Trim back damaged foliage in spring

Pests

Generally pest-free

Diseases

Generally disease-free