🌰 Beaumont Macadamia

Macadamia integrifolia ‘Beaumont’
The vigorous, heavy-bearing macadamia: buttery nuts on a handsome evergreen that hates frost and loves a long, warm season.
Sun
Full sun, 6-8 hours
Days to harvest
4-7 years to first nuts from grafted trees
Spacing
25-30 feet apart
Soil pH
5.5-6.5, slightly acidic
Zones
Zones 9-11; frost-free warm climates only

What it looks like

Beaumont Macadamia (Macadamia integrifolia) — Macadamia foliage (variety Beaumont) at a Macadamia farm near Helensville, Auckland district, New Zealand
Macadamia foliage (variety Beaumont) at a Macadamia farm near Helensville, Auckland district, New Zealand. Photo: Kahuroa, Public domain.
Beaumont Macadamia (Macadamia integrifolia) — New growth on Macadamia Beaumont
New growth on Macadamia Beaumont. Photo: Nz aj (talk), Public domain.
Beaumont Macadamia (Macadamia integrifolia) — New growth on Macadamia Beaumont
New growth on Macadamia Beaumont. Photo: The original uploader was Gerçekler at Turkish Wikipedia., CC BY-SA 2.5.

Why this variety

Beaumont is one of the most widely planted macadamia varieties, a hybrid type known for vigor, heavy crops, and good nut quality. The nuts are the classic macadamia experience: smooth, buttery, rich, with a delicate sweetness that makes them expensive in stores for a reason — the tree takes years to bear, the nuts must be husked, dried, and cracked, and the whole process is slower than any annual crop. Beaumont shortens the wait compared with seedlings and crops heavily once mature, which is why orchards chose it.

The tree itself is handsome: a dense, broad evergreen, 30-50 feet in garden settings, with glossy foliage and clusters of cream flowers that smell faintly sweet. It is a landscape tree that happens to produce one of the world’s most prized nuts, provided frost does not visit. That proviso is doing a lot of work, and it is the whole story of macadamia outside the tropics.

Vigorous, heavy-bearing, buttery nuts. Grafted trees bear years sooner than seedlings. Frost-sensitive — a hard freeze damages or kills young trees.

How to grow

Plant grafted trees in full sun and water young trees regularly until established; mature trees tolerate some dry periods but crop best with consistent moisture. Mulch heavily and avoid disturbing the shallow root system — macadamia roots resent cultivation and compaction.

Plant grafted trees in full sun in deep, fertile, well-drained soil, and give them their mature spacing from day one — nut trees become large trees, and crowding a nut tree is a decades-long mistake. Stake young trees against wind, prune for a strong central leader or open form depending on species, and be patient: nut trees are measured in years to first crop and decades to peak production.

Florida framing, stated plainly: Beaumont’s Florida case is South Florida only, in frost-free or nearly frost-free spots, and even there it is a trial. Macadamia hates frost, and North and Central Florida freezes are a real risk; wind is another enemy, as macadamia wood is brittle and storms snap branches. Plant in South Florida in full sun on well-drained, slightly acidic soil, sheltered from prevailing wind, with room for a large evergreen. Do not plant it in North or Central Florida expecting a nut tree to survive winters.

Water & feeding

Water young trees deeply and regularly until established; mature nut trees tolerate dry periods but crop best with consistent moisture through nut fill. Mulch heavily with wood chips or leaves, kept off the trunk, and work worm castings into the root zone at planting and as an annual top-dress. Avoid disturbing shallow roots with cultivation — many nut trees resent root disturbance for years.

Common problems

  • Squirrels — the primary harvest competitor for every nut tree. Harvest promptly when nuts drop or husks split; leaving nuts on the ground is donating them.
  • Blight, canker, and fungal diseases — worst in humid climates. Choose resistant varieties where available, prune for airflow, and remove diseased wood promptly.
  • Wet feet — nut trees drown in waterlogged soil. If your site holds water after rain, plant elsewhere or plant on a mound.
  • Alternate bearing — a heavy crop one year followed by a light one is normal for many nut trees, not a sign of failure. Thin heavy crops and feed consistently to soften the swing.
  • Weevils and husk pests — fallen, wormy nuts should be cleaned up promptly to break pest cycles.

Harvest

Harvest when nuts drop or husks and burrs split — do not pick unopened burrs and hope. Husk or hull promptly, wash if needed, and dry thoroughly before storage; nuts stored damp go rancid or moldy. Wear gloves for spiny burrs and husky walnuts alike: the tree defends its crop, and it is right to do so.

Nerdy fact: Macadamia nuts are the hardest nuts to crack of any commonly eaten nut, which is why commercial crackers use a vise-like mechanism rather than a hand cracker. The shell’s toughness is not a flaw; it is the tree’s way of protecting a very rich, very desirable seed from everything except a determined animal with tools.

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Saving seeds

Beaumont is a hybrid variety, so seed saved from it won’t come true — plant a grafted tree instead. The Saving seeds section of the Macadamia guide covers seed for the straight species.