Queensland Bottle Tree

The Queensland Bottle Tree (Brachychiton rupestris) is one of Australia's most distinctive native trees, instantly recognisable by its swollen, bottle-shaped trunk that stores water to help it survive long dry spells. Native to the semi-arid woodlands of central Queensland, this slow-growing, long-lived tree can reach 10–20 metres in height, with mature specimens developing dramatically bulging trunks that can measure several metres around. Its bark is pale grey and smooth to slightly wrinkled, while the deciduous, glossy green leaves give way to small cream-yellow bell-shaped flowers in late spring to summer. Hardy, drought-tolerant and strikingly sculptural, the bottle tree is prized as a feature specimen in gardens, parks and streetscapes across Australia, and remains a beloved emblem of the Queensland outback.

Position: Full sun for best growth and trunk form; tolerates part shade when young.

Soil: Adaptable to most well-drained soils, including poor, rocky or sandy conditions; will not tolerate waterlogged or heavy clay soil without good drainage.

Watering: Drought tolerant once established. Water regularly for the first 1–2 years to develop a strong root system, then reduce frequency — overwatering can cause trunk rot.

Climate: Suited to subtropical, tropical and semi-arid climates; hardy to light frost once established, though young trees are frost-sensitive.

Spacing: Allow 4–6 metres from structures and other trees to accommodate the mature trunk width and canopy spread.

Planting depth: Plant at the same soil level as the container, taking care not to bury the trunk base.

Fertilising: Minimal feeding required; a light application of native slow-release fertiliser in spring supports young trees.

Growth rate: Slow-growing, so choose the final position carefully — the bottle tree is not well suited to relocation once established.