Herbarium of the Ancients — Detailed Record

Grindelia squarrosa

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 professional advice before use.

Enhanced precautions for this plant: Plant containing resinous compounds and traces of selenium absorbed from the soil: prolonged use or high doses are not recommended. Contraindicated in pregnant or breastfeeding women due to insufficient data. May interact with certain cardiac or diuretic treatments; consult a healthcare professional before any internal use. Reserved for occasional external use or internal use supervised by a qualified herbalist or physician.

Compress — Flowers

Soothing compress for the skin

Prepare a concentrated infusion of dried flowers in hot water, allow to cool then soak a clean cloth. Apply to irritated areas several times daily. Dosage must be validated with a healthcare professional or recognized pharmacopoeia before use.

Infusion — Flowers

Traditional infusion for the respiratory tract

Dried flowers were infused for a few minutes in simmering water before being sipped slowly. This internal use requires prior advice from a professional due to the plant's active compounds. Dosage must be validated with a healthcare professional or recognized pharmacopoeia before use.

Tincture — Flowers

Flower tincture

Fresh or dried flowers were macerated for several weeks in alcohol to obtain a concentrated tincture, traditionally used diluted externally. Preparation and dosage must be supervised by a trained professional. Dosage must be validated with a healthcare professional or recognized pharmacopoeia before use.

Where to find it

Sourcing the plant

Found wild in dry prairies and poor soils of North America; in France, it is mainly available as mother tincture or extract from specialized herbalists.

Harvest season

When to harvest

Flowers are harvested in summer, when fully bloomed and laden with resin, preferably in dry weather.

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