Nature conservation

Threatened species

Giant Ironwood - profile

Indicative distribution

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The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas. ( click here to see geographic restrictions). The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Backhousia subargentea
Conservation status in NSW: Endangered
Commonwealth status: Not listed
Profile last updated: 17 Mar 2021


Giant Ironwood grows up to 30 m tall but, in NSW, most specimens are less than 8 m tall and consist of clumps of crooked trunks growing in dense patches. The attractive bark is smooth, with blotches of pink-mauve, orange-green and copper-colour. The leaves are paired, 4 – 8 cm long and tapering to a point at the tips. They are shiny dark green above and silvery below, and when crushed have a strong eucalyptus-like scent. Flowers are white, in dense round heads, and are followed by small dry capsules.


Known in NSW only from Mount Chincogan near Mullumbimby and one recent record at Jiggi north-west of Lismore, and in Queensland from Boonah to Imbil.

Habitat and ecology

  • Giant Ironwood is found in dry rainforest regrowth consisting of thickets growing in steeply sloping paddocks on basalt-derived soil as well as in sub-tropical and warm temporate rainforest.
  • Within Queensland the species is known to occur in the ecotone between subtropical rainforest and open eucalypt forest.

Regional distribution and habitat

Click on a region below to view detailed distribution, habitat and vegetation information.


Recovery strategies

Activities to assist this species

Information sources

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
South Eastern QueenslandBurringbar-Conondale Ranges Known None
South Eastern QueenslandScenic Rim Known None
South Eastern QueenslandSunshine Coast-Gold Coast Lowlands Predicted None