tree

Kurrajong

The Story

Plant Bio

Brachychiton populneus, the kurrajong, is an evergreen Australian tree reaching thirty to sixty-five feet in height, featuring a characteristic swollen, water-storing trunk base that tapers with age. The glossy dark green leaves are highly variable, shifting from deeply lobed shapes on juvenile growth to simple lanceolate forms on mature branches.

The bell-shaped flowers lack true petals, presenting instead as clusters of creamy-white calyces speckled with dark red or purple inside the throat from spring through summer. Large, woody seed pods follow the blooms, containing seeds packed tightly within a layer of fine, irritating hairs.

Uses & Benefits:

Features a unique tapered, bottle-shaped trunk and highly variable, glossy green foliage that provides dense shade.

Extremely drought-tolerant once established, storing water in its swollen trunk to survive prolonged dry spells.

Provides canopy cover and supports general local insect pollinators with its nectar-rich bell flowers.

Essentials

At a Glance

Plant Type

Tree

Height

787"

Width

394"

Light

Full Sun, Partial Sun

Zones

9, 10

Water

Low

Humidity

Low to Moderate

Lifespan

Long-lived

Native To

Australia

Toxicity

Seeds toxic to livestock in large quantities; seed pods contain irritating hairs

Bloom period

Spring – Summer

In flower about 6 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade with highly permeable, well-draining soil.
Dig a hole twice as wide as the root ball but no deeper, ensuring the trunk flare sits level with the surrounding soil.
Water deeply immediately after planting to settle the soil, then establish a deep, infrequent watering schedule.
Apply a thin layer of organic mulch around the root zone, keeping it several inches away from the trunk base to prevent rot.

Pro Tip

Avoid cutting heavy structural limbs back into old, leafless wood, as the tree fails to resprout cleanly from inactive tissue; always wear heavy gloves when handling the woody seed pods to prevent skin irritation from the internal fibers.

Keep It Thriving

Care Guide

Do

Wear thick gloves and eye protection when collecting or cleaning up fallen seed pods.
Ensure the soil dries out completely between waterings once the tree is established.
Protect young saplings from browsing deer and rabbits with physical cages.

Don't

Do not plant in low-lying areas prone to standing water or prolonged waterlogging.
Do not prune heavily into old, thick, leafless wood.
Do not over-fertilize, though standard slow-release formulas are tolerated without issue.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Specimen TreeShade TreeWindbreakStreet TreeXeriscaping

Companion Plants

Rosmarinus officinalis Agave americana Salvia apiana

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.

Is Kurrajong deer resistant?

Not reliably. Deer may browse Kurrajong, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Kurrajong bloom?

Kurrajong typically blooms in 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.