Mullein
Verbascum thapsus
A tall, velvety-leafed biennial long used as the premier lung herb — soothing dry coughs, loosening mucus, and supporting clear breathing.
At a glance
Tea is pale, mild, and very slightly sweet with a faint green, hay-like quality. Nearly tasteless — the medicine is in the mucilage, not the flavor.
- Dry, irritated cough tea
- Bronchitis and congestion support
- Steam inhalation for sinus clearing
- Ear-oil blend (with garlic and calendula)
Modern research
Tradition
Native American nations across North America smoked mullein leaves for respiratory complaints — a practice documented in the Cherokee, Navajo, and Potawatomi traditions. European herbalists from Dioscorides to Culpeper listed it as the primary herb for 'diseases of the lungs.' In Appalachian folk medicine it was made into syrup with honey and whisky for all chest complaints.
Modern evidence
Clinical evidence remains limited; no large controlled trials on cough specifically. In vitro studies confirm antiviral activity against influenza A and antimicrobial action. A small randomized trial found a mullein-containing naturopathic ear-drop formula comparable to anesthetic ear drops for ear pain. The traditional use as a respiratory demulcent and expectorant aligns well with its known mucilage and saponin content.
How to prepare
The tea is the most traditional form, but straining is critical — mullein's tiny leaf hairs cause throat irritation if swallowed. Use a fine-mesh cloth or a coffee filter. Steep longer than most herbs (10–15 minutes covered) to draw out the mucilage fully. For convenience, tincture avoids the straining issue entirely.
Garden note
A dramatic biennial that forms a flat rosette of huge velvety leaves in its first year, then shoots a 2-metre flower spike in its second. Self-seeds freely in disturbed soil, roadsides, and gravel — more found than grown. Leaves are harvested from first-year plants; flowers are gathered one by one as they open along the spike.