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Photo: Qwert1234, CC BY-SA 3.0 (via Wikimedia Commons)

Horny Goat Weed

Epimedium sagittatum

Also known as Yin Yang Huo, Barrenwort, Bishop's Hat, Fairy Wings, Rowdy Lamb Herb

At a glance
Family
Berberidaceae (Barberry family)
Type
Herbaceous perennial groundcover
Parts used
Leaves (aerial parts)
Size
12 to 18 inches tall, slowly spreading clumps
Bloom
Late spring, small white spurred flowers held above the foliage
Habitat
Shaded woodland slopes and forest understory across central and southern China
Acquisition
Grow or buy

Key benefits

Traditional tonic for vitality
Supports healthy circulation
Traditional aid for stamina
Handsome shade garden groundcover

Traditional uses

In Chinese herbalism, Epimedium sagittatum has been known for centuries as Yin Yang Huo, one of the classic tonics for what practitioners called kidney yang, the body's deep reserve of warmth and vigor. Old herbals from the Tang dynasty onward describe it as a restorative for tired backs, cold limbs, and flagging stamina in old age. It has traditionally been used to support circulation and to help those recovering from long illness regain their strength. The plant's folk name traces back to herders in Sichuan who noticed their goats grow notably frisky after browsing its leaves, a story that has followed the herb ever since.

How to grow & use it

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Pairs well with
  • Ginseng
  • Goji Berry
  • Cinnamon
Substitutes
  • Ashwagandha
  • Maca
Choose it when

For the quiet hour when the body asks for warmth, and old stamina to be coaxed back.

Did you know?

The plant earned its common name from a Sichuan legend about a goat herder who noticed his flock grew unusually amorous after grazing on its leaves, a story herbalists have retold for generations.

Safety

Horny goat weed acts on hormones and blood pressure, so it can interact with blood pressure medication and blood thinners, and it's best avoided by anyone with a hormone-sensitive condition, in pregnancy, while breastfeeding, or for children. Taking too much, especially late in the day, has been linked to dizziness, nosebleeds, and trouble sleeping.