Edraianthus pumilio

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silvery dwarf harebell

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silvery dwarf harebell RHS

Synonyms

Wahlenbergia pumilio

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Alpine Rockery
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A more or less evergreen perennial forming tufts of silky grey-green, linear leaves. Solitary, bell-shaped violet-blue flowers 1.5-2cm in length nestle among the foliage

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

Up to 10 cm

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
Up to 10 cm

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or North–facing or West–facing or East–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)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Campanulaceae
Native to GB/Ireland
No
Foliage
Deciduous, Evergreen
Habit
Matforming, Tufted
Genus
Edraianthus can be evergreen or herbaceous pernnials making tufts of narrow grass-like leaves, with solitary or clustered, bell-shaped flowers in summer
Name Status
Correct

How to Grow

Cultivation

Grow in very well-drained, preferably alkaline, soil in full sun. Resting buds are susceptible to winter wet

Propagation

Propagate by seed and softwood cuttings from sideshoots

Suggested planting locations and garden types

  • Rock garden
  • Gravel garden
  • Patio and container plants

Pruning

No pruning required

Pests

May be susceptible to aphids, slugs and snails

Diseases

Generally disease-free