It is easy to see why Brachychiton rupestris are referred to as Bottle Trees. Their trunks swell and hold water reaching up to two metres in diameter.

They usually take 5-8 years to develop their swollen trunk. The water stored in their trunks allows them to survive when it is very dry.

First nations people historically carved holes into the soft bark to create reservoir-like structures.

The trees are semi-deciduous losing their leaves before they flower in summer months. This helps them reduce water loss.

In their native environment in Queensland they can grow up to 20 metres tall but in our climate they may not reach this height.