Identifying Balloon Flower (Platycodon) in a Public Garden

The mystery perennial with inflated buds opening to star-shaped flowers in pink, white, or purple is balloon flower (Platycodon grandiflorus).

Key Features

• Balloon-like buds before opening.
• 5-petaled star flowers, 2–3" across.
• Clump-forming, 1–3' tall.
• Late spring to summer bloom.
• Deep taproot (resents transplanting).

Growing Tips

• Full sun to part shade.
• Well-drained soil; avoids wet feet.
• Deadhead for repeat bloom.
• Mark location—slow to emerge in spring.
• Stake tall varieties.

Varieties to Seek

'Astra' series (compact), 'Fuji' series (tall, double), 'Sentimental Blue' (dwarf).

A charming, long-lived perennial for Midwest gardens.