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Plant Informational Database

Macadamia Nut

Macadamia integrifolia

a.k.a. Smooth Shelled Macadamia

Hard shelled fruit containing a single seed, the macadamia nut. Fruits are generally green skinned, with a brown seed, inside of its hard shell is an edible white kernel.

Seed Availability

Seeds are not available for the Macadamia Nut. Please visit our seed store to view current selections. Seeds were last available in May 2017.

Description

Medium to large sized tree, generally to 30-40ft but occasionally taller.

Hardiness

Macadamia's grow best in tropical and subtropical climates. The trees are reasonably hardy and can survive to 24F. In California, fruiting specimens are found as far north as the San Francisco Bay Area, (trees are found on the U.C. Berkeley campus, as well as the Strybing Arboretum in Golden Gate Park.) Younger trees can be killed by freezes.

Growing Environment

Trees grow best in full sun, except in hot climates where part shade is beneficial. Trees like year-round water, and although they will stand periods of drought, fruit set is usually lower.

Propagation

By seeds or grafts.

Uses

Seed kernels are edible when roasted. The macadamia nut is often considered the best tasting nut in the world and demands high prices in retail.

Native Range

Native to southeast Queensland, Australia. Grows wild in rainforest regions and near water sources.

Related Species

Proteaceae  
Macadamia integrifolia
Macadamia Nut
Protea cynaroides
King Protea
Protea repens
Sugar Bush Protea