Balloon-like buds unfold into broad, blue-purple bells above a tidy clump of foliage. Toraji, also known as balloon flower, brings a playful shape to perennial borders.
Give this perennial a sunny or lightly shaded spot with good drainage. Its fleshy roots resent disturbance, so choose a lasting position.
Plant Details
- Growth habit: Clump-forming herbaceous perennial
- Mature size: Typically 1–2 ft tall and 1–1½ ft wide; cultivar can affect size
- Bloom color: Blue to purple
- Bloom season: Late spring into summer
- Light: Full sun to partial shade
- Water: Regular moisture without waterlogging
- Soil: Well-drained, slightly acidic loam
- Hardiness: USDA zones 3–8
- Garden value: Ornamental flowers
- Best uses: Borders, cottage gardens, and small groups
- Native range: East Asia
- New England status: Non-native ornamental
Deadhead to encourage further flowering. The specific cultivar is not confirmed.
Plant references: NC State Extension
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