Adenophora polyantha

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many-flowered ladybells

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Synonyms

Adenophora polyantha 'Nakai'
Adenophora scabridula

Herbaceous Perennial

An herbaceous perennial producing spikes of funnel-shaped, deep sky-blue flowers in summer. It can reach 1m in height

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
South–facing or East–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)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Campanulaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright
Genus
Adenophora are deciduous perennials closely related to Campanula and bearing similar, bell-shaped or funnel-shaped, violet-blue flowers in large terminal panicles or racemes in summer, above rounded basal leaves
Name Status
Correct
Plant Range
Korea, Manchuria

How to Grow

Cultivation

Grow in light, humus-rich, moist but well-drained soil in full sun or partial shade

Propagation

Propagate by seed or propagate by cuttings from basal shoots

Suggested planting locations and garden types

  • Cottage and informal garden
  • Prairie planting
  • Low Maintenance
  • Flower borders and beds

Pruning

Cut back flowered stems in autumn

Pests

May be susceptible to slugs, snails and vine weevils

Diseases

Generally disease-free