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Platycodon grandiflorus Apoyama Group AGM

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© RHS 2002

Characteristics

Plant type

Herbaceous Perennial or Alpine/Rockery

Habit

Clump-forming

Resilience

Hardiness

H5 (hardy - cold winter)

Colour

Flower

Blue and Purple in Summer

Foliage

Blue and Green in Autumn, Spring and Summer

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

balloon flower Apoyama Group

Family

Campanulaceae


Platycodon are herbaceous perennials with neat, ovate leaves and terminal clusters of open bell-shaped flowers which open from large, balloon-shaped buds in late summer

Apoyama Group is a compact herbaceous perennial to 20cm in height, with blue-green foliage and rich violet flowers 5cm in width, opening from large inflated buds

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

  • South-facing, East-facing or West-facing
  • Exposed or Sheltered

Cultivation

Grow in deep, light, fertile, loamy, reliably moist but well-drained soil in full sun or partial shade. May need support; resents disturbance. Suitable for a rock garden or the front of a herbaceous border

Soil

  • Moist but well-drained
  • Acid, Alkaline or Neutral
  • Loam

Propagation

Propagate by seed or detach rooted basal shoots

Suggested planting locations and garden types

Flower borders and beds or Rock Garden


How to care

Pruning

Cut back to the base in autumn

Pests

Slugs and snails may be a problem

Diseases

Generally disease free