Adenophora khasiana

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Herbaceous Perennial
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A herbaceous perennial, up to 1.2m high, with thick, fleshy roots and upright stems with lance-shaped, serrated green leaves. Nodding, narrowly funnel-shaped, pale lavender blue flowers are borne in clusters of three in late summer

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1-1.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
1-1.5 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
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)
H4

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
Unresolved

How to Grow

Cultivation

Thrives in humus-rich, moist but well-drained soil in sun or part shade. Dislikes root disturbance and plants rarely tolerate division

Propagation

Propagate by seed, or by basal softwood cuttings in late spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Prairie planting
  • Wildlife gardens
  • Flower borders and beds

Pruning

No pruning required

Pests

May be susceptible to slugs, snails and vine weevil

Diseases

Generally disease-free