Herbarium of the Ancients — Detailed Record

Coriaria arborea

Read before use: the information below describes traditional and informational uses — it does not replace the advice of a healthcare professional. In case of doubt, pregnancy, breastfeeding, ongoing treatment, or use in children, seek advice before use.

Enhanced precautions for this plant: The entire plant, with the exception of the well-strained pulp of ripe berries, is considered highly toxic, particularly the seeds and young shoots. Accidental ingestion can cause severe convulsions and represents a documented danger, including for livestock. This plant should under no circumstances be used without guidance from an experienced expert or healthcare professional. Strictly contraindicated for children, pregnant or breastfeeding women, and in case of doubt regarding botanical identification.

External application (poultice) — Leaves

Poultice of crushed leaves

Fresh leaves were crushed and then applied directly to the affected area, according to reported traditional uses that are poorly detailed. This preparation should only be considered after consulting a professional with precise knowledge of the plant. Dosage must be validated with a healthcare professional or recognized pharmacopoeia before use.

Where to find it

Obtaining the plant

Coriaria arborea grows wild in scrublands and forest edges of New Zealand; it is absent from herbal shops and gardens outside its native range due to its recognized toxicity.

Harvest season

When to harvest it

The berries reach maturity in late summer and early autumn in the southern hemisphere, a period during which the Māori harvested them with extreme care to remove the toxic seeds.

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