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  1. Vic_flora_eucalyptus_microcarpa_photo-_geoff_lay__c._2018_geoff_lay__all_rights_reserved_5 VIC FLORA Eucalyptus microcarpa Photo- Geoff Lay, c. 2018 Geoff Lay, all rights reserved 5
  2. Vic_flora_eucalyptus_microcarpa_photo-_neil_blair__c._2018_neil_blair__all_rights_reserved_4 VIC FLORA Eucalyptus microcarpa Photo- Neil Blair, c. 2018 Neil Blair, all rights reserved 4
  3. Vic_flora_eucalyptus_microcarpa_photo-_neil_blair__c._2018_neil_blair__all_rights_reserved_5 VIC FLORA Eucalyptus microcarpa Photo- Neil Blair, c. 2018 Neil Blair, all rights reserved 5
  4. Vic_flora_eucalyptus_microcarpa_photo-_neil_blair__c._2018_neil_blair__all_rights_reserved_6 VIC FLORA Eucalyptus microcarpa Photo- Neil Blair, c. 2018 Neil Blair, all rights reserved 6

Grey Box

Eucalyptus microcarpa


  • Medium sized tree with long ascending branches forming a fairly large crown, grey fibrous bark on the lower branches and trunk. The upper branches have a smooth grey coloured bark.
  • Size: commonly to 10 - 25m tall
  • Leaves: Juvenile leaves petiolate (a stalk that joins a leaf to a stem), are dull green, oval, usually 15cm long and 5cm wide. Adult leaves are narrow oval shape tapering to a point at each end, usually 8–15 cm long and 1–2 cm wide, clustered and dull green. 
  • Flowers: The flower buds have cone-like caps. Flowers are cream to white which appear in late summer to winter (February to June).
  • Fruits/seeds: Round or oval, 3–7 mm long and 3–5 mm wide, coupled on a small stalk and brown in colour.


What to Observe

  • First fully open single flower 
  • Full flowering (record all days)
  • End of flowering (when 95% of the flowers have faded)
  • No flowering


ClimateWatch Science Advisor

We expect plants to start shooting and flowering earlier in the year as a result of climate change warming the Earth. They may also start appearing in new areas, as warmer temperatures enable them to live in environments that were previously too cold for them. Help scientists answer the question: "How are our animals, plants and ecosystems responding to climate change?"

When To Look

Between February and June for flowering.

Note: ClimateWatch is looking for any changes in the timing of these events so remember to keep a lookout from late January!

Where To Look

Widespread and locally abundant, in grassy woodland on sandy-silty soils of moderate fertility in South Australia, Victoria, New South Wales, Queensland and the Australian Capital Territory.

Note: ClimateWatch is looking for any changes outside of their known ranges so remember to keep a lookout beyond these regions too!



  • Royal Botanic Gardens Board Victoria 2015 ( for species information.
  • PlantNET ( for species information.


  1. Search Species

  1. What Else?

    • Within its natural distribution E. microcarpa is only likely to be confused with E. pilligaensis (Narrow-leaved Grey Box), which has narrower juvenile and adult leaves. 
    • Eucalyptus albens Benth (White Box) : Adult leaves are adult leaves petiolate, 10–16 cm long and1.7–3 cm wide, dull, blue-grey. Flowers August to February – white flowers
    • Can be confused with Yellow Box (E. mellidora) which has a scruffy, yellowish to dark brown fibrous bark, dull, green and grey leaves with distinct intramarginal veins, and fruit with enclosed valves.