Herbarium of the Ancients — Detailed GuideFR · EN

Common Juniper

Juniperus communis
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: Strongly contraindicated during pregnancy: juniper is traditionally reported as a uterine stimulant and emmenagogue. Prolonged use or high doses should be avoided, due to risk of kidney irritation; contraindicated in cases of kidney failure or inflammatory kidney disease. Avoid in children and when taking medication, without advice from a healthcare professional. Do not confuse with other Juniperus species, some of which are toxic (e.g., savin juniper).
Infusion — Leaves

Traditional leaf infusion

Pour simmering water over dried leaves and let steep for about ten minutes, covered. This preparation was used occasionally, without excess, in folk tradition. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.

Decoction — Root

Root decoction for external use

Gently boil root pieces in water for about twenty minutes, then let cool before using as a local rub. This less common preparation is part of traditional external use and warrants advice from an herbalist or healthcare professional before use. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.

Fumigation — Leaves

Purifying fumigation

Burn a few sprigs of dried leaves on charcoal or in an incense burner to cleanse the air in a room, according to an ancient practice widespread in the European countryside. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.

Where to find it

Sourcing the plant

Common juniper is found wild on heathlands, limestone slopes, and sparse woodlands throughout Europe, as well as in herbal shops as dried leaves or berries.

Harvest season

When to harvest

Leaves are preferably harvested in spring and summer, while roots are dug up in autumn, outside frost periods.

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