Macadamia Nut Tree
|1.7 Tree Friend Data Sheet|
Macadamia Nut Tree
|Latin Name of tree||M. tetraphylla|
Macadamia (Genus) tetraphylla (Species)
|Latin name of tree family||Proteaceae|
|Country/Area of origin||Subtropical east coast of Australia|
North Eastern NSW; Central and South Eastern QLD
|Annual rainfall in area of origin||1,000–2,000 mm|
|Average life of tree||Over 100 years|
|Years until first fruit||7-10 years|
|Season when fruits||Autumn/Winter (March to July)|
185 days from fruit set to maturity
|Expected/average number of years expected to fruit||Indefinite|
Production of fruit increases annually from approximately 7 years until 15 years; production remains steady after 15 years.
42 years in commercial production
|Height at maturity||Medium sized tree up to 20metres|
|Width at maturity||Up to 20metre crown width|
|Diameter of trunk||0.3metres|
|Shape at maturity||Round|
|Arbour (foliage)||Dark green whorls of three or four; oblong; up to 20cm long; 3-13cm broad; toothed.|
Purplish-pink flowers in pendulous sprays to 20cm occur in Spring.
|Challenges/special requirements||Pests & Diseases:|
Rats, particularly Rattus Rattus or Black rat, are fond of the nut.
Flower & leaf eating Caterpillars. Trichogramma wasps can be used for Macadamia Nutborer control
Needs well drained, rich, composted soil and ample moisture.
|Other (products, benefits, uses, facts)||Products/Uses:|
– Fruit itself; Oil; Macadamia milk; Macadamia nut butter; Wood; Gifts & cooking (e.g. chocolate covered; biscuits etc); Shells can be burned as a wood substitute when roasting coffee; Low quality kernels can be used as animal feed; Husks can be ground to produce organic waste for gardening, for mulch and for chicken litter.
– Don’t pick the nuts from the tree; they fall to the ground of their own accord when they are ripe.
– Kindal Kindal is the name given to the tree by Aboriginal Australians.
– Macadamia nuts are toxic to dogs
– Handsome, ornamental tree.
Wrigley, J.W. & Fagg, M. (2001) Australian Native Plants: Propagation, cultivation and use in landscaping (4th Ed). Sydney, Australia: Reed New Holland Australia Pty Ltd.