Ross Warner – Macadamia


Average expected life of tree, in years, from sprout to death (approx numbers)

A reasonably long-life tree commonly considered to live for anywhere between 60 and 100 years.

Years until trees first fruit (ie some trees fruit within a few years, others can take decades)

Trees reach maturity at 7-10 years.

c) Season of year when productive tree fruits (ie Summer, Autumn, Winter Spring or combo ie Su/Au)

Mature green nuts between December-March (Summer/Autumn).

Often collected after falling to the ground between March-September (Autumn/Winter)

Expected or average number years tree expected to fruit for once it begins. (ie year 8 to 20 = 12 yrs)

Commercial lifespan is commonly considered to be 40-60 years (with some trees capable of bearing nuts for up to 90 years!)

e) Country/area of origin

East coast of Australia.  From Bundaberg to Coffs Harbour (or 25 degrees to 31 degrees South latitude).  Queensland and Northern New South Wales.

f) Average annual rainfall in area of origin

     Approximately 1200mm of rainfall annually

  • Bundaberg: About 1099 mm
  • Brisbane: About 1018 mm
  • Coffs Harbour: About 1,699 mm.

g) Latin name of tree and family

Latin name:  Macadamia integrifolia

Family:  Proteaceae

h) Any other products, benefits, useful or interesting facts about of tree:

  • Nut can be ground to a flour, then added to recipes.
  • An edible oil can be extracted from the seed/nut.
  • Nuts can be stored in a refrigerator for up to 2 years without deteriorating.
  • Grown and harvested commercially with great success in regions such as Hawaii, USA.

i)  Height, width and shape of tree at maturity.

A medium-sized tree, rounded shape, which can grow to approximately 20 m in height with a similar crown width (arbour or foliage spread).  Average height between 12-15 metres (with proportional crown width).  The average trunk diameter is around 300mm. The root is of the dicot type producing a tap upon germination followed by growth of lateral roots.

*the profile shape is important for later design work

j)  challenges or special requirements, such as needing other varieties in order to fruit

  • Slow growing – patience required for a long-term payoff!
  • Cannot grown in full shade.
  • Prefers well-draining soil

Submitted 19th February, 2019

Thanks 😊

About The Author

Related Posts

Leave a Reply

Your email address will not be published. Required fields are marked *