Australian Native Plants

  Acacia brachybotrya (Grey Mulga)

Acacia brachybotrya photo
Acacia brachybotrya. Moonah, the Edward River, Riverina NSW.

Photograph by Margaret R Donald. Some rights reserved.    (view image details)

Growth Characteristics information is sourced from: State Flora Catalog, Government of South Australia Licensed under Creative Commons CC BY 4.0 license.


distribution map showing range of Acacia brachybotrya in Australia

Map is from The Atlas of Living Australia web site, licensed under Creative Commons Attribution 3.0 Australia License

Common Name
Grey Mulga

The Grey Mulga is a dense, spreading, rounded shrub growing from 1 m to 3 m tall. The phyllodes are grey-green and flat with a length of about 3.5 cm and width of 1.5 cm. It blooms in winter and spring between July and November. The flowers are produced in clusters of two to five spherical bright yellow flower-heads from the leaf axils. The seed pods are dark brown, straight to slightly curved, about 7 cm long and 6 mm wide. The seeds are dark brown to black and are around 7 mm long and of 4 mm wide.

grows in a variety of soils, and is often found in mallee habitat.

The Grey Mulga is found in south eastern Australia, mainly in southern South Australia, northern parts of Victoria and central and western parts of New South Wales

Growth Characteristics
Height (m): 2 - 4
Spread (m): 1.5 - 4
Soil Texture: sand, loam, clay, limestone
Soil pH: acid soils, neutral soils, alkaliine soils
Frost Sensitivity: resistant
Minimum Rainfall (mm): 250
Flower Colour: yellow
Flower Season: winter, spring

(source: SA State Flora Catalog)

scarified seed

Wildlife Interest
attracts seed-eating and insect-eating birds

Common Name:Grey Mulga

Relatives in same Genus
  Acacia acanthoclada
  Acacia acinacea
  Acacia acradenia
  Acacia aculeatissima
  Acacia alata
  Acacia amblygona
  Acacia amoena
  Acacia aneura
  Acacia aulacocarpa
  Acacia auriculiformis
  Acacia baileyana
  Acacia beckleri
  Acacia boormanii
  Acacia brachystachya
  Acacia buxifolia
  Acacia caesiella
  Acacia calamifolia
  Acacia cardiophylla
  Acacia chrysocephala
  Acacia cognata
  Acacia colei
  see A-Z list for more ...