The Story
Plant Bio
Nauclea orientalis is a tall, semi-deciduous tree native to northern Australian watercourses and tropical gallery forests, where it develops a distinctive tiered branching habit. The large, broad, opposite leaves are glossy green and leathery, forming a dense, layered canopy.
In spring and summer, the tree produces dense, spherical flower heads resembling yellow-orange pincushions up to five centimetres across. These are followed by large, warty, fleshy syncarp fruits that are edible but sour.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Tree
Height
787 inches
Width
590 inches
Light
Full Sun, Partial Sun
Zones
10
Water
High
Humidity
High
Lifespan
Multi-decade
Native To
Northern Australia, Southeast Asia, Malesia
Toxicity
Non-toxic
Bloom period
Spring – Summer
In flower about 4 months of the year
Planting
How to Grow
- Select a planting site in full sun to partial shade with deep, moist alluvial or clay soil.
- Dig a hole twice the width of the root ball and plant at the same depth as the nursery container.
- Water deeply and regularly during the first few years to establish a deep, resilient root system.
- Apply a thick layer of organic mulch around the base, keeping it clear of the trunk to retain soil moisture.
Pro Tip
Reserve this species for expansive acreage or riparian restoration; its extensive root system and heavy leaf and fruit drop quickly overwhelm standard suburban blocks.
Keep It Thriving
Care Guide
Do
- Water regularly during dry spells, especially while the tree is young.
- Protect young trees from cold winds and frost.
- Mulch the root zone to retain consistent soil moisture.
Don't
- Do not plant close to pipes, foundations, or in small suburban gardens.
- Do not prune heavily into old, bare wood.
- Do not allow young plants to dry out completely.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Pest Check | ||||||||||||
| Prune |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Leichhardt Tree questions
What zones can Leichhardt Tree grow in?
Leichhardt Tree is hardy in USDA Zone 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 Leichhardt Tree bloom?
Leichhardt Tree 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 Leichhardt Tree need full sun?
Leichhardt Tree does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Keep exploring
Explore the genus
Hardy in your zone?
Grow Leichhardt Tree with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.