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Macadamia tetraphylla Queensland nut Evergreen tree (1 Page of 5) The Macadamia tetraphylla plant species is found in Australia - New South Wales, Queensland. It is a member of the Proteaceae family. Common gardeners may know the plant as Queensland nut. Cultivation | Propagation | General Uses Medicinal | Edible Uses Latin Name: Macadamia tetraphylla Common Name: Queensland nut Family: Proteaceae Author: L.Johnson. Known Hazards: None known Mature Height: 10 Mature Width: 10 Habitat: In or near rainforests[167].
Cultivation Notes: Plants grow best in rich moist but well-drained soils and a position in full sun[117]. They require copious summer watering in their early stages[167]. Mature plants need at least 1250mm of rainfall equally distributed throughout the year and a mild frost-free climate[117]. Trees require a sheltered position and are easily damaged by strong winds[117, 200].
Plants can be grown in climates cooler than their native habitat, but they are not very hardy in Britain. They produce fruit in Australia when growing at least as far south as Sydney[157]. They can survive slight frosts[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[117, 167]. The trees then produce commercial crops for about 40 - 50 years and can fruit for up to 100 years[200]. Plants are self-fertile but yield better if cross-pollinated[117].
Pruning is not normally necessary, but is tolerated if carried out in the autumn[188].
For further Macadamia tetraphylla gardening information click on one of the blue links below Cultivation | Propagation | General Uses Medicinal | Edible Uses
The information above has been supplied solely via the hard work and dedication of the team at 'Plants for a Future'. View their bibliography

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