Acacia implexa, the Lightwood or Hickory Wattle, is a fast-growing Australian native valued for its hardiness, ecological function, and graceful form. The slender upright habit and light green curved phyllodes give it a soft, airy presence, while pale yellow fragrant flowers appear in late summer to support native insects and birds.
Lightwood grows to 8-15 metres tall and 4-6 metres wide. The deep root system, nitrogen-fixing ability, and tolerance of poor soils make it an excellent choice for revegetation corridors, rural shelterbelts, erosion control, and habitat planting where long-term resilience matters more than ornamental polish.
Lightwood thrives in full sun and tolerates drought, seasonal dryness, and light frost once established. It performs reliably across most of eastern and southern Australia, and is widely specified for council planting, soil-improvement zones, and low-input rural landscapes.
Frequently Asked Questions
About Acacia implexa Lightwood
How tall does Lightwood grow?
Acacia implexa grows to 8-15 metres tall and 4-6 metres wide with a slender upright form.
How fast does Lightwood grow?
Lightwood is fast-growing, adding 60cm to 1 metre per year once established.
Is Lightwood an Australian native?
Yes. Acacia implexa is native to eastern Australia, ranging from QLD through NSW and VIC, where it grows naturally in open forest and woodland.
When does Lightwood flower?
Lightwood produces pale yellow lightly fragrant ball-shaped flowers in late summer, typically January to March across Australia, attracting native insects and birds.
Is Lightwood drought tolerant?
Yes. Lightwood is highly drought tolerant once established, handles poor soils and seasonal dryness, and is well suited to low-input revegetation sites.
Does Lightwood improve soil?
Yes. Like most wattles, Acacia implexa fixes nitrogen in the soil through its root system, making it a useful species for soil improvement and erosion control.
Where does Lightwood grow best in Australia?
Lightwood thrives across most of eastern and southern Australia in full sun, tolerating drought, poor soils, and light frost once established. It is widely used for shelterbelts and habitat planting.
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