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Platycodon grandiflorus Hakone Blue

Balloon Flower

Tall, slender plants produce balloon-shaped flowers which open to star-shaped, double, dark blue blooms.

  • »  Bell-shaped flowers have five pointed lobes
  • »  Double blue flowers form in small clusters
  • »  Narrow dark green leaves
  • »  Plant is late to emerge in the spring
  • »  Bloom Time: Early July to August
  • »  Flower Height: 60 cm
  • »  Foliage Height: 45 cm
  • »  Flower Size: 6 cm across

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  • Category:Perennials
  • Hardiness Zone:3
  • Height:40-45 cm
  • Spread:40-50 cm
  • Bloom Color: Blue
Exposure
• Full Sun
• Partial Sun/Shade
Soil Moisture
• Moist to Average
• Average to Dry Soils
• Well-drained
Growth Rate
• Medium
• Slow
Attributes
• Cut Flower/Foliage
• Long Blooming
• Low Maintenance
Flowering Time
• Lt. Spr-Sum
• Summer
Habit
• Clumping
• Upright
Foliage Color
• Green (dark)
Landscape uses
• Border/edging
• Rock garden
Planting instructions
• Container Plants
Additional Information about Platycodon grandiflorus 'Hakone Blue'

The common name "balloon flower" refers to the buds, which swell like balloons before opening. 

Growing & Maintenance Tips for Platycodon grandiflorus 'Hakone Blue'

Grows best in an average to moist, well-drained soil, in full sun to partial shade. Not easily transplanted once established. It is late to emerge in spring, so it is important to mark the crown areas to avoid damage during early cultivation. Remove spent flowers to prolong bloom time or prune back after flowering to maintain shape.