Blue vervain is a tall North American wildflower with distinctive spiky blue-purple flower spikes, traditionally used by Indigenous peoples and early herbalists to calm nervous tension and support respiratory health. Its bitter, stimulating properties make it particularly valued for addressing stress-related digestive complaints and promoting emotional grounding.
leaf, flower, root
tea, tincture, decoction, powder
1–2 tsp dried leaf as tea 2–3x daily; 30–60 drops tincture 2–3x daily
May cause vomiting in high doses. Avoid in pregnancy.
Explore the full cross-tradition profile, AI botanical notes, and related blends:
Open Blue Vervain in the app →