Side-by-side plant comparison — which is right for your garden?
Platycodon grandiflorus
Campanulaceae · flowers
Dahlia pinnata
Asteraceae · flowers
Balloon Flower (Zones 3-8)
Dahlia (Zones 8-11)
Overlap: Both grow in zones 8–8
| Feature | Balloon Flower | Dahlia |
|---|---|---|
| Scientific Name | Platycodon grandiflorus | Dahlia pinnata |
| Family | Campanulaceae | Asteraceae |
| Category | flowers | flowers |
| Sun | ☀️ Full Sun to Part Shade | ☀️ Full Sun |
| Water | 💧💧 Medium | 💧💧 Medium |
| Soil | Well-drained | Rich, Well-drained |
| Height | 2' | 5' |
| Spread | 1' | 2' |
| Bloom Season | Summer | Summer-Fall |
| Bloom Color | Blue, White, Pink | Mixed |
| Growth Rate | Medium | Fast |
| Native Region | East Asia | Mexico, Central America |
| Maintenance | Low | Medium |
Balloon Flower
Dahlia
Balloon Flower
Dahlia
Choose Balloon Flower if you want a low-maintenance plant, and want deer resistance. It thrives in full sun to part shade with medium water in zones 3–8.
Choose Dahlia if you don't mind medium maintenance. It thrives in full sun with medium water in zones 8–11.
Plant them together? Both overlap in zones 8–8. However, they have different sun needs, so plan your garden layout carefully.
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