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Platycodon grandiflorus 'Mariesii' AGM

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© RHS

Characteristics

Plant type

Herbaceous Perennial

Habit

Bushy

Resilience

Hardiness

H5 (hardy - cold winter)

Colour

Flower

Blue 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 'Mariesii'

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

'Mariesii' is an herbaceous perennial to 45cm tall, with blue-green lance-shaped leaves and violet-blue flowers 5cm wide, opening from balloon-like buds in late summer

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

Soil

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

Propagation

Propagate by seed in pots or in situ in spring; cultivars may not come true from seed

Suggested planting locations and garden types

City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Gravel Garden, Flower borders and beds or Rock Garden


How to care

Pruning

Cut back to the base in autumn

Pests

May be attacked by slugs and snails

Diseases

Generally disease free