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  1. A._melanoxylon_seed_pods_julie-burgher-flickrcc A. melanoxylon_seed pods_Julie-Burgher_FlickrCC


Acacia melanoxylon


Description: small to large tree, 3-45 m high.  

Leaves: inclined to ascending, narrowly rounded, lance-shaped, straight to slightly curved. 3-5 raised main veins with numerous secondary veins.   

Flowers: Pale yellow/golden to white clusters of 2-8 that flowers July – December. In Victoria, it flowers in August - October.

Fruits/Seeds: Seed pods strongly curved, twisted or coiled and 4-12 cm long, usually straight-sided to slightily constricted between seeds. Seeds longitudinal, twice-encircled by an orange to red funicle (elongated fleshy structure that supports the seed). 


What to Observe

  • First fully open single flower (each ‘flower ball’ is actually a cluster of 30-50 flowers!)
  • Full flowering (record all days)
  • End of flowering (when 95% of the flowers have faded)
  • No flowering
  • Open seed pods (record all days)
  • Unopened seed pods


ClimateWatch Science Advisor

Plants are expected to alter their shooting and flowering periods as a result of climate change impacting temperature and rainfall. They may also start appearing in new areas, as climate change enables them to live in environments that were previously unsuitable for them. 

Help scientists answer the question: "How are our animals, plants and ecosystems responding to climate change?"


When To Look

From winter to summer

  • Flowers appear from July to December 
  • Seed pods appear after flowers

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


Where To Look


Grows in a variety of habitats, cheifly in wet schlerophyll forest and in or near cooler rainforest, in every state except Northern Territory.

Not native to WA.

Blackwood distribution map - GBIF

Blackwood distribution map - GBIF



PlantNET, Royal Botanic Gardens Sydney

Acacia melanoxylon, Flora of Victoria

ClimateWatch Science Advisory Panel


  1. Search Species

  1. What Else?

    Acacia melanoxylon is one of the most wide-ranging tree species in eastern Australia and considerably variable, particularly in leaf size and shape.

    Acacia implexa differs in its whitish funicle around the seed, leaves that are more sickle-shaped and later flowering time.

  1. Did You Know?

    Acacia melanoxylon is invasive in parts of Africa, western Europe, South America, New Zealand and USA.

    Along with several other Australian species, it  has tehe dubious honour of being listed in the top 100 of the world's worst insasive species. 

    Aboroginals used the fine hard wood to make strong spear-throwers, boomerangs, clubs and shields in parts of Victoria. The inner bark was used to make string.