Platycodon grandiflorus Apoyama Group

RHS Plant Profile

balloon flower Apoyama Group

RHS 2002

Other common names

balloon flower 'Apoyama'

Synonyms

Platycodon grandiflorus 'Apoyama'

Alpine Rockery Herbaceous Perennial

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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

Position

Full sun, Partial shade

Soil Types

Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

Loam

Moisture: Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: South–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
Habit: Clump forming
Genus: 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
Name Status: Accepted

How to Grow

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

Propagation

Propagate by seed or detach rooted basal shoots

Suggested planting locations and garden types

Rock garden
Flower borders and beds

Pruning

Cut back to the base in autumn

Pests

May be susceptible to slugs and snails

Diseases

Generally disease-free