Blue Vervain (Verbena hastata): Traditional Uses & Safety

At a glance

Botanical name: Verbena hastata
Family: Verbenaceae
Part used: Aerial Parts
Taste: Bitter, slightly pungent
Temperature: Cool
Moisture: Drying

No pre-1900 source found for this exact plant. Every old reading describes the European vervain or the Chinese ma bian cao, not the North American blue vervain this entry is about.

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Safety at a glance

In pregnancy

Avoid — traditional emmenagogue and uterine stimulant

While breastfeeding

Avoid during breastfeeding — traditional uterine stimulant with limited lactation data.

For children

Not typically indicated; very-low-dose for children with tension is possible under guidance

Cautions

Emetic in large doses (Eclectic); bitter may worsen hyperacidity

General contraindications

Active peptic ulcer; Verbenaceae allergy (rare)

Stewardship

Blue Vervain (Verbena hastata) is cultivated and wild in North America; distinct from European Vervain (V. officinalis). Stewardship: the Matthew-Wood 'type-A stress' herb — honor the herbalist who named the terrain pattern clearly.

In the traditional record

Blue Vervain (Verbena hastata) — the related European Verbena officinalis was held sacred by the druids and described by Pliny as one of "the seven holy herbs"; the North American species was used by the Iroquois, Pawnee, and Omaha for fevers, headache, and stomach complaints, and was adopted into Eclectic practice as a diaphoretic and nervine.

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Educational use

The Apothecary is educational and does not constitute medical advice. Nothing here is intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare provider before changing what you take, especially if you are pregnant, nursing, taking medication, or managing a diagnosed condition.

On our sources

These entries draw on public-domain materia medica, most of it published before 1900, alongside a smaller number of modern reference works. Energetic qualities such as warming, cooling, drying and moistening are a traditional framework for describing how a plant behaves in the body, not a laboratory measurement. Where a period source states one, we cite it. Where none does, and for many North American herbs none exists, the value reflects modern herbal consensus rather than a historical text. When we cannot support a caution with real evidence, we say nothing rather than guess.