Australian Native Plants

  Eucalyptus sideroxylon (Red Ironbark)

Eucalyptus sideroxylon photo
Eucalyptus sideroxylon. Photograph taken in Turvey Park, New South Wales

Photograph by Bidgee. Some rights reserved.    (view image details)

Eucalyptus sideroxylon photo
Eucalyptus sideroxylon, Aranda, ACT,

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

Eucalyptus sideroxylon photo
Eucalyptus sideroxylon bark

Photograph by John Robert McPherson. Some rights reserved.    (view image details)

Description, Habitat and Distribution information is sourced from: G.M.Chippendale (2017) Eucalyptus sideroxylon. In: Flora of Australia. Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Licensed under Creative Commons CC BY 4.0 license.

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 Eucalyptus sideroxylon in Australia

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

Common Name
Red Ironbark

Other Names

Tree to 35 m. Bark hard, black, deeply furrowed throughout or on trunk and larger branches, smooth, white on upper branches. Juvenile leaves alternate, petiolate, linear to lanceolate or ovate, green or grey-green, slightly discolorous. Adult leaves lanceolate to narrowly lanceolate, acuminate or uncinate; lamina green, grey-green or blue-green; lateral veins just visible, at 25° -40° ; intramarginal vein up to 2 mm from margin; petiole terete, 10-20 mm long. Peduncle quadrangular to terete; pedicels quadrangular. Buds ovoid, rostrate; operculum conical or rostrate; hypanthium ovoid to hemispherical. Fruits hemispherical, ovoid, subglobular or urceolate; valves 5 or 6, included.

Grows in shallow sand, gravel and clay mainly on hills or sloping country in woodland. Grows in gravelly and rocky soil on low hills and plateaus in open forest.

Occurs from south-eastern Qld through N.S.W. to Vic. Stamens white, cream, pink or red.

Growth Characteristics
Height (m): 10 - 30
Spread (m): 8 - 15
Soil Texture: loam, clay
Soil pH: acid soils, neutral soils, alkaliine soils
Frost Sensitivity: resistant
Minimum Rainfall (mm): 500
Flower Colour: cream, pink
Flower Season: autumn, winter

(source: SA State Flora Catalog)

Common Name:Red Ironbark

Relatives in same Genus
  Eucalyptus acaciiformis
  Eucalyptus accedens
  Eucalyptus acies
  Eucalyptus albens
  Eucalyptus bancroftii
  Eucalyptus baxteri
  Eucalyptus caleyi
  Eucalyptus camaldulensis
  Eucalyptus camphora
  Eucalyptus cloeziana
  Eucalyptus crebra
  Eucalyptus crenulata
  Eucalyptus curtisii
  Eucalyptus dealbata
  Eucalyptus dumosa
  Eucalyptus eugenioides
  Eucalyptus forrestiana
  Eucalyptus goniocalyx
  Eucalyptus grandis
  Eucalyptus intertexta
  Eucalyptus largiflorens
  see A-Z list for more ...