tree

Queensland Bottle Tree

The Story

Plant Bio

Brachychiton rupestris, the Queensland bottle tree, is an evergreen Australian tree native to dry rainforests and open woodlands of Queensland and northern New South Wales. It develops a swollen, bottle-shaped succulent trunk designed to store water, topped by a dense, rounded crown of glossy dark green leaves.

This species exhibits strong heterophylly, with juvenile plants displaying deeply lobed, slender leaves before transitioning to simple, lanceolate adult foliage as the trunk begins to swell. In spring, it produces clusters of small, bell-shaped cream flowers with faint reddish interior markings along the branchlets.

Uses & Benefits:

Provides a dramatic, sculptural focal point with its swollen, bottle-shaped trunk and dense canopy.

Stores water in its trunk, making it exceptionally drought-tolerant once established.

Flowers attract native bees, insects, and nectar-feeding birds.

Essentials

At a Glance

Plant Type

Tree

Height

787 inches

Width

393 inches

Light

Full Sun

Zones

9, 10

Water

Low

Humidity

Low to moderate

Lifespan

Long-lived

Native To

Queensland and New South Wales, Australia

Toxicity

Non-toxic to humans; potential stock toxicity if cattle ingest large quantities of felled timber.

Bloom period

Spring

In flower about 1 month of the year

Planting

How to Grow

Select a planting site in full sun with excellent drainage, as waterlogged soil causes rapid root rot.
Dig a hole twice as wide as the root ball but of equal depth to keep the stem base level with the surrounding soil.
Backfill with native soil, avoiding the addition of rich organic matter or heavy composts that retain excess moisture.
Water deeply immediately after planting to settle the soil, then withhold water until the top few inches of soil dry out completely.

Pro Tip

Amateurs often overwater and overfertilise to force rapid growth, which bloats the tissues, ruins the compact bottle shape, and invites fungal root rot. Professional landscapers exploit the tree's fibrous, water-storing trunk to successfully transplant mature specimens with minimal root-ball preparation.

Keep It Thriving

Care Guide

Do

Ensure the soil drains rapidly and completely.
Protect young, actively growing trees from frost.
Allow the soil to dry out thoroughly between waterings.

Don't

Never prune into old, leafless wood or cut into the main water-storing trunk.
Do not overwater or allow the plant to sit in boggy, waterlogged conditions.
Avoid heavy applications of high-phosphorus fertilisers.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Pest Check
Propagate
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Specimen plantingArchitectural featureLarge gardensContainer planting

Companion Plants

Xanthorrhoea johnsonii Doryanthes excelsa Anigozanthos flavidus

Multiply

Propagation Methods

Good to Know

Common Questions

Queensland Bottle Tree questions

What zones can Queensland Bottle Tree grow in?

Queensland Bottle Tree is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

When does Queensland Bottle Tree bloom?

Queensland Bottle Tree typically blooms in spring through spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Queensland Bottle Tree need full sun?

Queensland Bottle Tree does best in full sun (6+ hours).

Is Queensland Bottle Tree drought tolerant?

Yes — once established (usually after the first full season), Queensland Bottle Tree handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.