Common name: Mulga


Origin of Scientific Name

Acacia aneura in flower between June and October in Kings Park and Botanic Garden. Photo: D. Blumer.View image slideshow

Acacia – (Greek) acis – a point or thorn.

aneura – (Greek) a - not, and neuron - nerve, referring to the absence of conspicuous veins on the phyllodes (leaf structures).


Acacia aneura or Mulga as it is commonly known is synonymous with the Australian arid landscape, being widespread throughout all mainland states apart from Victoria. Here in Western Australia, it occurs in arid regions from the Pilbara through inland deserts, the Murchison, the goldfields to the Nullabor.

The Mulga has a wide range of naturally occurring forms from shrubs as low as 1 metre to trees up to 10 metres high. Acacia aneura was recently classified into seven separate species, with 12 species now included in the Mulga complex. What they have in common is their thin, dark and flaky bark and narrow, leathery phyllodes (leaf structures). These phyllodes vary in length but are often pendulous and covered with minute hairs giving them a greyish appearance. From June to October, golden yellow rod-like flower-heads appear en masse at the ends of branchlets, followed by flat seed pods.

Acacia aneura is long-lived, making it a suitable long-term addition to any landscape. Generally, the golden-yellow flowers are produced in winter and spring but with reliable water under cultivation, this species can flower lightly over many months. It has the potential to be used in many arid landscapes and certain forms are suitable as street trees or for planting in groves or windbreaks. Combine with other desert species such as Eucalyptus victrix, E. youngiana, Triodia basedowii, T. bynoei and Ptilotus exaltatus to create a display celebrating the flora of these regions.

Horticultural tips

  • Propagation is from seed.
  • A drought and frost resistant species, best suited to arid climates.
  • Requires well-drained, medium to light soils, and is lime tolerant.
  • Prefers full sun but will grow in partial sun.

For more horticultural tips view our Plant Notes section.

View in Kings Park

Visit Kings Park and Botanic Garden to see Acacia aneura at the entry to the Western Australian Botanic Garden.

Want more information?

Refer to the profile for this plant on the Department of Biodiversity, Conservation and Attractions' FloraBase online herbarium.

Acacia aneura is commonly known as a Mulga tree. Photo: D. Blumer. Acacia aneura growing in Kings Park and Botanic Garden. Photo: D. Blumer.

Bold Park burn deferred

The autumn Bold Park research burn has been deferred due to unsuitable weather conditions.

Lightscape setup disruptions

There will be works taking place throughout the Western Australian Botanic Garden from 18 May until 16 June 2023 due to Lightscape setup.

Fraser Circle closure trial

We would like your feedback on the closure of Fraser Circle (located off Fraser Avenue).

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City of Perth E-Scooter Trial Expands through Kings Park

Visitors will be able to hire and ride e-scooters within Kings Park as part of City of Perth’s E-scooter Share Scheme from Saturday 25 March 2023.

Support for Noongar Boodja continues

Fugro has generously renewed their partnership with the Botanic Gardens and Parks Authority (BGPA) to bring another three years of the very popular ‘Noongar Boodja’ education program to Kings Park.

Rare plants stolen from Kings Park

We're devastated to announce up to 900 of WA’s rarest orchids have been stolen from the Conservation Garden in Kings Park.

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