Usnea (Usnea barbata) - Old Man's Beard

Dried Usnea, commonly called "Old Man's Beard," the gray-green hair-like lichen that drapes from tree branches in healthy forests. Usnea has a long traditional use across European and Native American herbalism, particularly in connection with respiratory support and topical applications. Unlike most herbs, Usnea is not a plant - it's a lichen, a symbiotic organism of fungus and algae.

Key Facts

Botanical name

Usnea barbata and related Usnea species

Type

Lichen (fungus + algae symbiosis), not a plant

Common names

Usnea, Old Man's Beard, Beard Moss, Tree Beard

Distribution

Globally distributed in old-growth and clean-air forests

Studied compounds

Usnic acid, polysaccharides

Traditional uses

Respiratory support, immune support, topical wound applications

Ecological indicator

Usnea is sensitive to air pollution; abundant Usnea growth indicates clean air

What is Usnea?

Usnea is not a single plant but a lichen - a symbiotic organism made up of fungal hyphae and photosynthetic algae living together. The gray-green hair-like growth drapes from tree branches in mature forests. Usnea is exceptionally sensitive to air pollution, making its abundance an ecological indicator of clean air; old-growth forests of the Pacific Northwest are particularly known for thriving Usnea populations.

How to Use Usnea

Tincture is the traditional preferred preparation: the active usnic acid is water-poorly-soluble but alcohol-soluble. To make a tincture, fill a jar 1/2 with cut Usnea, cover with high-proof alcohol, steep 2-6 weeks; strain. For tea, simmer chopped Usnea for 30+ minutes (the long simmer is needed for the limited water extraction). Usnea is also used externally as a poultice or in salves.

Frequently Asked Questions

Is Usnea a plant?
No; Usnea is a lichen - a symbiotic organism of fungus and algae living together.

What is Usnea used for?
Respiratory support, immune support, and traditional topical wound applications.

Why a tincture instead of tea?
Usnic acid is poorly water-soluble but alcohol-soluble; tincture extracts the active compounds better.

What is usnic acid?
The primary studied compound of Usnea; documented antimicrobial properties.

Where does Usnea grow?
In old-growth and clean-air forests globally, draped from tree branches.

Is Usnea sustainable to harvest?
Usnea grows slowly; sustainable harvest takes only what has naturally fallen or is from properly managed wildcrafting. We source from sustainable harvesters.

This product has not been approved by the Food and Drug Administration and is not intended to diagnose, treat, cure, or prevent any disease. We recommend that you consult with a qualified healthcare practitioner before using any herbal products, particularly if you are pregnant, nursing, or on any medications.