Mullein Benefits, Uses, Side Effects and Preparation Methods

Mullein (Verbascum thapsus)

Mullein, usually referring to Verbascum thapsus, is a biennial herb in the Scrophulariaceae family known for its large velvety leaves and tall spike of yellow flowers. Native to Europe, Asia, and North Africa, it has become widely naturalized across North America. The leaves and flowers are the parts most often used in traditional herbal practice, while the root has also appeared in some folk preparations.

Mullein has long been associated with traditional respiratory herbalism, especially in soothing teas, syrups, and steam preparations for the throat and chest. The flowers were also infused into oil for external use, and the leaf became a familiar herb in old Western folk medicine.

Because mullein self-seeds readily and often grows on dry disturbed ground, it is commonly seen along roadsides, fields, and open sunny spaces throughout the United States.

Botanical Overview

Botanical name: Verbascum thapsus
Family: Scrophulariaceae
Plant type: Biennial flowering herb
Native region: Europe, Asia, and North Africa
Common names: Common mullein, great mullein, woolly mullein, flannel leaf

Traditional & Common Uses

Mullein has traditionally been used to support:

Soothing herbal teas for the throat and chest
Traditional respiratory preparations and steam inhalations
Warm infusions and syrups used in seasonal wellness routines
Flower-infused oils for external ear and skin preparations
Demulcent herbal blends for dryness and irritation
Folk remedies using leaves, flowers, and occasionally the root

Historically, mullein was widely used in European and North American folk herbalism as a comforting herb for the lungs and throat. Its soft leaves and bright yellow flowers made it easy to recognize, and it became a common household plant for teas, warm infusions, and infused oils.

“Mullein has long been valued in traditional household herbalism as a soft, soothing herb for teas, oils, and chest preparations.”

— Traditional Western herbal practice

Preparation Methods

Mullein can be prepared in several traditional ways:

Tea or Hot Infusion

Dried mullein leaf or flower is commonly steeped in hot water to make a soothing herbal tea. The tea is usually strained carefully through a fine cloth or filter to remove the tiny hairs from the leaf.

Part of the plant used: Leaves or flowers

Syrup

A strained mullein infusion may be combined with honey or another sweetener to prepare a traditional herbal syrup used in seasonal formulas.

Part of the plant used: Leaves or flowers

Infused Oil

Fresh or dried mullein flowers may be infused in a carrier oil over time to make a traditional oil for external use.

Part of the plant used: Flowers

Steam Preparation

The dried leaf may be added to hot water so the aromatic steam can be inhaled as part of traditional respiratory herbal practice.

Part of the plant used: Leaves

Growing Mullein

Mullein is a hardy biennial herb that forms a low rosette of soft gray-green leaves in its first year and sends up a tall flower spike in its second year. It is highly adaptable and often thrives in rough, open, sunny ground.

Prefers full sun and well-drained, poor to average soil
Tolerates dry conditions and is drought tolerant once established
Hardy in USDA growing zones 3-9 across much of the United States
Often grows in fields, roadsides, gravelly soil, and other disturbed ground

Mullein self-seeds very easily and may behave like a weed in some gardens if flower spikes are left to set seed. It is an easy plant for dry sites, but gardeners should place it where its height and spreading habit can be managed.

Safety Considerations

Mullein has a long history of traditional use and is generally considered a mild herb, but it should still be prepared and used carefully.

However:

The tiny hairs on mullein leaves may irritate the mouth, throat, or skin in some individuals if preparations are not well strained.
Fresh plant material and leaf fuzz may cause mild skin sensitivity in people with sensitive skin.
Mullein seeds are not typically used in herbal preparations and should not be consumed.
Individuals with known sensitivity to plants in the Scrophulariaceae family should introduce mullein cautiously.
Pregnant or breastfeeding individuals should consult a qualified healthcare professional before using concentrated mullein preparations internally.
Always strain mullein tea carefully and use herbal products from reputable sources.

This information is provided for educational purposes only and is not medical advice.

Because mullein self-seeds readily and often grows on dry disturbed ground, it is commonly seen along roadsides, fields, and open sunny spaces throughout the United States.

Traditional & Common Uses

Mullein has traditionally been used to support:

Soothing herbal teas for the throat and chest
Traditional respiratory preparations and steam inhalations
Warm infusions and syrups used in seasonal wellness routines
Flower-infused oils for external ear and skin preparations
Demulcent herbal blends for dryness and irritation
Folk remedies using leaves, flowers, and occasionally the root

“Mullein has long been valued in traditional household herbalism as a soft, soothing herb for teas, oils, and chest preparations.”

— Traditional Western herbal practice

Preparation Methods

Mullein can be prepared in several traditional ways:

Tea or Hot Infusion

Part of the plant used: Leaves or flowers

Syrup

A strained mullein infusion may be combined with honey or another sweetener to prepare a traditional herbal syrup used in seasonal formulas.

Part of the plant used: Leaves or flowers

Infused Oil

Fresh or dried mullein flowers may be infused in a carrier oil over time to make a traditional oil for external use.

Part of the plant used: Flowers

Steam Preparation

The dried leaf may be added to hot water so the aromatic steam can be inhaled as part of traditional respiratory herbal practice.

Part of the plant used: Leaves

Growing Mullein

Prefers full sun and well-drained, poor to average soil
Tolerates dry conditions and is drought tolerant once established
Hardy in USDA growing zones 3-9 across much of the United States
Often grows in fields, roadsides, gravelly soil, and other disturbed ground

Safety Considerations

Mullein has a long history of traditional use and is generally considered a mild herb, but it should still be prepared and used carefully.

However:

The tiny hairs on mullein leaves may irritate the mouth, throat, or skin in some individuals if preparations are not well strained.
Fresh plant material and leaf fuzz may cause mild skin sensitivity in people with sensitive skin.
Mullein seeds are not typically used in herbal preparations and should not be consumed.
Individuals with known sensitivity to plants in the Scrophulariaceae family should introduce mullein cautiously.
Pregnant or breastfeeding individuals should consult a qualified healthcare professional before using concentrated mullein preparations internally.
Always strain mullein tea carefully and use herbal products from reputable sources.

This information is provided for educational purposes only and is not medical advice.

Frequently Asked Questions

What is mullein traditionally used for?

Mullein is traditionally used in herbal preparations for the throat, chest, and general seasonal wellness. The leaves and flowers are commonly prepared as teas, syrups, and infused oils in Western folk herbalism.

What part of the mullein plant is used?

The leaves and flowers are the parts most often used in herbal preparations. The root also appears in some traditional folk uses, but the leaf and flower are the best-known parts of the plant.

How is mullein tea prepared?

Mullein tea is usually made by steeping the dried leaf or flowers in hot water. It is important to strain the tea very well through a fine filter because the small hairs on the plant can be irritating if left in the liquid.

Can mullein grow in the United States?

Yes. Mullein grows widely across the United States and is hardy in USDA zones 3-9. It often appears in sunny dry areas, open fields, roadsides, and other disturbed ground.

Is mullein considered a weed?

In some places, yes. Mullein self-seeds easily and can spread in dry open ground, so it is sometimes treated as a weed or volunteer plant rather than a carefully planted garden herb.

Are there safety concerns with mullein?

Mullein is generally considered mild, but the tiny hairs on the leaves can irritate the mouth, throat, or skin if preparations are not strained properly. The seeds are not typically used and should not be consumed.