Queensland Macadamia Nut Tree (Macadamia ternifolia)

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Sunlight Full sun to partial shade; prefers full sun for optimal nut production; tolerates dappled shade in extreme heat

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Watering Water deeply when the top 10–15 cm of soil is dry; avoid overwatering to prevent root rot

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Temperature Thrives in warm temperate to subtropical climates; avoid prolonged exposure to temperatures below 5°C

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Leaf: Leathery, oblong leaves in whorls of 3; glossy dark green margins with fine spines
Flower: Long, drooping racemes of creamy white, fragrant blossoms
Stem/Bark: Smooth grey-brown bark on young trees; fissured, rough texture with age

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Watering

Increase frequency during fruiting season; keep soil consistently moist but not waterlogged

Fertilization

Apply balanced slow-release fertilizer once. Avoid high-nitrogen fertilizers to prevent excessive foliage growth over nut production

Composted banana peel tea：Compost banana peels for 2–3 months; steep in water for 24 hours, dilute 1:20 for root drench to avoid nutrient burn

Pruning

Prune to shape canopy in late winter; remove dead or crossing branches to improve air circulation
Thin overcrowded growth to increase sunlight penetration for nut development
Trim low-hanging branches to facilitate harvest access and reduce pest hiding spots

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No documented toxicity to cats from typical exposure

Humans: No significant toxicity to humans; nuts are edible when processed

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Culture: N/A

Usage: Edible nuts for culinary use; ornamental shade tree in gardens