tree

Kurrajong

The Story

Plant Bio

Brachychiton populneus, commonly known as the Kurrajong, is an upright evergreen or semi-evergreen tree native to eastern Australia. It develops a stout, slightly bottle-shaped trunk when young, which matures into a coarsely fissured grey bark.

The species is distinguished by its highly variable, glossy green leaves that range from simple ovate shapes to deeply lobed forms on the same plant. In late spring and summer, it produces clusters of bell-shaped, creamy-white flowers with throats heavily speckled in pink, red, or purple-brown.

Uses & Benefits:

Features a distinctive bottle-shaped trunk, glossy variable foliage, and speckled bell-shaped flowers.

Serves as an exceptionally drought-tolerant shade tree with a fire-resistant tap-rooted tuber.

Provides nectar for native bees and insects, while birds forage on the mature seeds.

Essentials

At a Glance

Plant Type

Tree

Height

787 inches

Width

590 inches

Light

Full Sun, Partial Sun

Zones

9, 10

Water

Low

Humidity

Low to high

Lifespan

Long-lived

Native To

Eastern Australia

Toxicity

Skin Irritant

Bloom period

Late spring – Summer

In flower about 3 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade with highly drained soil, avoiding any areas prone to waterlogging.
Dig a hole twice as wide as the root ball but no deeper, ensuring the deep taproot is not bent or disturbed during transition.
Backfill with native soil, firm gently, and water in thoroughly to settle the soil around the root system.
Apply a thin layer of organic mulch around the base, keeping it clear of the trunk to prevent collar rot.

Pro Tip

Never pollard or heavily prune this tree to manage its size, as cutting into old, leafless wood ruins its natural architectural form and invites internal fungal wood rot.

Keep It Thriving

Care Guide

Do

Ensure the planting site has excellent drainage to prevent root rot.
Wear gloves and eye protection when handling mature seed pods to avoid irritating hairs.
Prune minimally, only to remove dead wood or clear immediate structural hazards.

Don't

Do not plant near sewer lines, agricultural drains, or restricted garden spaces due to the extensive root volume.
Do not prune heavily into old, leafless wood.
Do not allow the soil to become waterlogged or boggy.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mulch
Pest Check
Plant
Propagate
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shade treeWindbreakSpecimen planting

Companion Plants

Westringia fruticosa Grevillea cultivars Anigozanthos flavidus

Multiply

Propagation Methods

Good to Know

Common Questions

Kurrajong questions

What zones can Kurrajong grow in?

Kurrajong 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 Kurrajong bloom?

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

Does Kurrajong need full sun?

Kurrajong does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Kurrajong drought tolerant?

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