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Macadamia integrifolia - Maiden.&Betche.

Common Name Macadamia, Macadamia nut
Family Proteaceae
USDA hardiness 9-12
Known Hazards None known
Habitats Dry rainforests of the eastern coastal scrub[167, 260].
Range Australia - New South Wales, Queensland.
Edibility Rating    (2 of 5)
Other Uses    (2 of 5)
Weed Potential No
Medicinal Rating    (0 of 5)
Half Hardy Moist Soil Full sun
Macadamia integrifolia Macadamia, Macadamia nut

Macadamia integrifolia Macadamia, Macadamia nut


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Physical Characteristics

 icon of manicon of cone
Macadamia integrifolia is an evergreen Tree growing to 10 m (32ft) by 10 m (32ft) at a slow rate.
It is hardy to zone (UK) 9 and is frost tender. It is in leaf all year. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It prefers moist soil.



Woodland Garden Sunny Edge; South Wall. By. West Wall. By.

Edible Uses

Edible Parts: Oil;  Seed.
Edible Uses: Oil.

Seed - raw or cooked. Sweet and delicious, they can be added to cakes, biscuits, ice cream etc[167, 183]. They can also be ground into a flour and then added to cereals to enrich their protein value. The shell is very hard, making it difficult to extract the seed[260]. An edible oil is obtained from the seed[183].

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

None known

Other Uses


None known

Cultivation details

Agroforestry Services: Crop shade;  Global Crop;  Management: Standard;  Other Systems: Multistrata;  Staple Crop: Oil.

Plants grow best in rich moist soils and require copious summer watering in their early stages[167], though established plants are very drought resistant[200]. Trees require a sheltered position and are easily damaged by strong winds[200]. Plants can be grown in climates cooler than their native habitat, but they are not very hardy in Britain. They can survive slight frosts, however[200], and have succeeded outdoors in the Scilly Isles[1]. Growth is optimal between temperatures of 20 - 25°c, ceasing when they fall below 10°c or rise above 30°c[200]. Cold weather can result in the loss of the entire crop[200]. The macadamia nut is cultivated for its edible seed in many tropical and sub-tropical areas[167], there are some named varieties[167, 183]. Plants are slow growing in cultivation, seedlings take 6 - 7 years to produce their first fruit[167]. The trees then produce commercial crops for about 40 - 50 years and can fruit for up to 100 years[200]. Pruning is not normally necessary, but is tolerated if carried out in the autumn[188]. This species was formerly considered to be a part of M. ternifolia[167].


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Seed - best sown as soon as it is ripe in a warm greenhouse[188]. The dehusked seed germinates quickly at 25°c[200]. The seed can also be sown in the spring in a warm greenhouse[188]. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. If trying them outdoors, give the plants some protection from the cold for their first few winters. Cultivars may be grafted.

Other Names

If available other names are mentioned here

Macadamia, Smoothshell, Queensland Nut

Found In

Countries where the plant has been found are listed here if the information is available


Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status : This taxon has not yet been assessed

Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Macadamia tetraphyllaQueensland Nut, Macadamia nut20


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Links / References

For a list of references used on this page please go here
A special thanks to Ken Fern for some of the information used on this page.

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Subject : Macadamia integrifolia  
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