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Archival plate of Juniperus communis, from Bigelow, American Medical Botany, 1817 to 1820
The Moss Herbal Database
Juniperus communis
Fam. Cupressaceae
Parts: Ripe berries (cones)
Plate: Bigelow, American Medical Botany, 1817 to 1820 ↗

Juniper

Juniperus communis
Also: Common juniper, Juniper berry
WarmingDryingTonifying

A resinous berry that disinfects the bladder and warms a cold gut.

A spreading evergreen shrub of dry, rocky ground with prickly needles and blue-black berries that are really fleshy cones, two to three years in the ripening. Juniper warms digestion and moves water through the kidneys, carrying its antiseptic oils through the urinary tract.

Energetics
Warming, drying, toning
Taste
Resinous, piney, bittersweet
Family
Cupressaceae (cypress family)
Parts used
Ripe berries (cones)

Medicinal uses 4

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Traditional useLab and mechanism studiesClinical studies

Preparations

Berry tea and tincture in short courses, culinary berries, and antiseptic washes.

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Cautions

  • Use only the berries of common juniper. The leaves and essential oil are toxic, and so are several other junipers, savin above all.
  • Leave it out with kidney disease or a kidney infection, and keep internal courses to 4 to 6 weeks.
  • It may lower blood sugar; watch readings if you take diabetes medicine.

Medication interactions

Practitioner Practitioners are able to see the 2 types of medicine flagged for juniper, each with the mechanism and what to do. The plain-language cautions above stay open to everyone.

Pregnancy & breastfeeding

PregnancyAvoid

Juniper stimulates the uterus and is one of the classic herbs once used to end pregnancies. It is avoided in every form during pregnancy.

BreastfeedingAvoid

Its action on the uterus and its kidney-irritating oils keep it out of nursing.

Practitioner Practitioners are able to see the full entry from the Moss Herbalism Pregnancy Safety Database: trimester ratings, uterine and placental action, breastfeeding and nursing-baby effects, chemistry, traditional use, studies, and sources.

Folklore

Gin takes its name from the Dutch jenever, juniper, the berry that flavors it. In the Scottish Highlands, households burned juniper at the New Year to cleanse the house, a custom called saining, and juniper smoke was burned against plague in medieval sickrooms. Because the berries take two or three years to ripen, a single bush carries green and blue berries at the same time.

How to grow

A tough, slow-growing shrub for full sun and poor, dry, rocky or sandy soil. Plants are male or female, and only females bear berries. Pick fully blue, ripe berries in autumn.

In the wild

Rocky hills, heaths, open woods, and mountain slopes across the Northern Hemisphere; common juniper has the widest range of any conifer on Earth.

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