Iconic Queensland endemic tree with massive swollen bottle-shaped trunk storing water for dry seasons. Small narrow leaves and inconspicuous cream flowers — the architectural trunk shape is the entire ornamental point.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 9–11 | −6.7 °C to 10 °C | Plant tolerates down to this zone |
| RHS hardiness rating | H2 | 1 °C to 5 °C | Plant needs at least this level of cold tolerance |
| Canadian plant hardiness zone | Zone 9 | −1 °C and warmer | Plant tolerates down to this zone |
| Australian (ANBG) zone | Zone 4–7 | 0 °C and warmer | Plant tolerates down to this zone |
Growing notes
- Endemic to subtropical inland Queensland — adapted to extreme drought, the swollen trunk is a water reservoir
- Eventually 20 m tall with a trunk 2+ m in diameter at maturity — among the most architectural trees in cultivation, often used in modernist landscape design
- Very slow growing — mature specimens often replanted from rural Queensland into Brisbane and southeast Queensland gardens
- Tolerates poor soil, drought, and heat exceptionally well
- Not reliably hardy outdoors in Canada — Canadian zone values shown represent the system maximum and do not imply garden cultivation north of the warmest coastal pockets.
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Related plants
Cross-check Queensland bottle tree against your zones