Herbarium of the Ancients — Detailed Record

Phormium tenax

Please 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 sap of Phormium tenax is known to be irritating and potentially toxic for internal use; it should never be ingested without the advice of a qualified professional. Avoid all internal use in pregnant or breastfeeding women, as well as in young children, in the absence of sufficient safety data. A preliminary skin test is recommended before any topical application, as the sap may cause irritation in sensitive skin. Since this plant has been little studied by modern science, its traditional uses cannot replace medical advice.

Poultice — Leaves

Heated leaf poultice

Fresh leaves are gently heated near a flame until softened, then applied directly to the painful or bruised area, held in place with a natural bandage. Reapply once or twice daily according to tradition. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.

Topical application — Leaves (sap from base)

Fresh sap for skin

The translucent sap collected from the base of freshly cut leaves is applied sparingly to a clean wound or superficial burn, using a clean cloth. Professional advice is recommended before any prolonged use. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.

Where to find it

Sourcing the plant

Phormium tenax grows naturally in wetland and coastal areas of New Zealand; in France, it is mainly found cultivated as an ornamental garden plant or in specialized nurseries.

Harvest season

When to harvest

Leaves are traditionally harvested year-round, with a preference for mature, undamaged leaves in late spring and summer.

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