Skullcap, Baikal

Scutellaria baicalensis

Baikal skullcap is a hardy perennial native to East Asia, particularly China, Mongolia, and Russia, best known for its cooling, anti-inflammatory properties and its long use in supporting the lungs, digestion and immune system.

Also known as Huang Qin, Baikal skullcap is one of the most important “heat-clearing” herbs in Traditional Chinese Medicine. It is quite different from the American species, Scutellaria lateriflora, which is used mainly as a calming nervine; in contrast, S. baicalensis is used for hot, irritated conditions such as fevers, chest infections, allergies and digestive inflammation (see below for more details on the differences between the three main skullcap species).

Native to dry, open slopes in northern China, Mongolia and Siberia, Baikal skullcap is well suited to sunny, well-drained positions in the herb garden. It is a hardy perennial that forms clumps of narrow leaves and purple-blue flowers. The roots are harvested in the plant’s second or third year, once they have developed their characteristic yellow colour.

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Sowing and Growing

Sow indoors from early spring on the surface of moist compost and lightly tamp down — the seed needs light to germinate, so do not fully cover. Keep warm (ideally around 18–22°C) and damp until germination, which starts within 10-14 days. We have observed that germination is quite erratic and can continue for up to a month, so keep the compost moist during this time, taking extra care to prevent it the surface from drying out as it warms up in late Spring.

Some growers report that it helps to soak the seeds in warm water for 12-24 hours before sowing, but we have always sown the seed without any form of soaking or stratification with good results.

Transplant seedlings into well-drained soil in full sun once large enough to handle. Plants prefer airy, dry conditions and do not thrive in hot or humid tunnels — move them outside as soon as weather allows. If possible, plant into a well-draining soil as the plants can struggle in waterlogged heavy soils. It is a hardy perennial that dies back in winter and re-emerges in spring, with beautiful violet-blue flowers by its second year.

Uses and Benefits

Baikal skullcap is primarily valued for its cooling, detoxifying and anti-inflammatory properties. Its golden yellow roots contain high levels of flavonoids, which modern research has shown to have strong anti-inflammatory, antiviral and antioxidant effects. In Chinese medicine, it is used to clear ‘heat from the upper burner’, addressing symptoms such as fever, cough, sore throat or irritability. It also helps ‘dry dampness’, supporting the liver, gallbladder and digestive lining in cases of loose stools or digestive heat.

Modern research supports its traditional uses, highlighting its ability to modulate inflammatory pathways, protect the liver and support immune defences. Baicalin, one of its key compounds, has demonstrated potential in protecting neural and cardiovascular tissues, calming allergic responses and helping balance autoimmune tendencies. There is also growing interest in its role in regulating the gut–immune axis and supporting recovery from chronic inflammatory conditions.

Energetically, Huang Qin is considered bitter and cold, making it best suited to individuals with hot, inflamed or congestive conditions rather than those with cold or deficient constitutions. It is often used in combination with other heat-clearing, lung-supporting or digestive herbs to create balanced formulas tailored to the individual.

Harvesting and Preparation

The roots of Baikal skullcap are harvested in the autumn of their second or third year, once the aerial parts begin to die back and the plant’s vitality returns to the root. Wash, slice, and dry the roots thoroughly to preserve the flavonoids.

Once fully dry, store the roots in an airtight jar away from light. The dried root can be decocted — simmer 3–9 g per day in water — or prepared as a tincture at a 1:5 ratio in 50% alcohol. Baikal skullcap blends well with herbs such as dandelion, burdock and licorice for balancing heat and supporting the liver.

A comparison of the three skullcaps

There are three main skullcap species used in herbal practice; American skullcap (Scutellaria lateriflora), Baikal skullcap (Scutellaria baicalensis) and Barbat skullcap (Scutellaria barbata). They all look quite similar with small blue-violet flower and distinctive ‘skullcap’ shaped seed pods, however they are all used very differently in herbal practice.

American skullcap (Scutellaria lateriflora) is the most commonly used in Western Herbalism. Native to damp meadows and woodland edges in North America, it is best known for supporting the nervous system—helping to ease anxiety, restlessness and muscle tension. Its aerial parts are harvested in flower and used fresh or dried to promote relaxation and better sleep.

Baikal skullcap (Scutellaria baicalensis), also known as Huang Qin in TCM, has a very different profile. Growing naturally on dry, sunny slopes in northern China and Mongolia, it is one of the major “heat-clearing” herbs of Chinese medicine. The root is the part used, valued for its strong anti-inflammatory, antiviral and allergy-modulating properties. It is especially useful for hot, irritated conditions of the lungs, gut and liver.

Barbat skullcap (Scutellaria barbata), or Ban Zhi Lian in TCM, comes from the warmer, wetter regions of southern China and Southeast Asia. This species is traditionally used for clearing “toxic heat”—infections, abscesses, hot urinary complaints and inflammatory swellings. Both the aerial parts and root are used, and it is also known for its role in integrative cancer care due to its antiproliferative properties.

In summary, although closely related, these three skullcaps are used for quite different purposes: lateriflora for calming the mind and easing tension, baicalensis for cooling and soothing inflammation, and barbata for clearing heat and tackling more intense infectious or toxic states.

Species Info
Soil
Height
Recommended Sowing Times
Sunlight
Water
Life Cycle

Perennial

Flowering

June, July, August

Hardiness

H5 (hardy – cold winter)

Herbal Uses

Circulation, Immunity, Liver, Mood, Nervous system, Sleep

Flower Colour(s)

Purple

UK Native

No

Can be sown direct?

Yes

General Uses

Medicinal

Make Your Own

Capsule, Cream, Glycerite, Herbal pills & lozenges, Herbal Tea, Tincture

Herbal Tradition

Chinese (TCM)

Stratification Needed?

Cold-moist stratification helps but not essential

Description

Baikal skullcap is a hardy perennial native to East Asia, particularly China, Mongolia, and Russia, best known for its cooling, anti-inflammatory properties and its long use in supporting the lungs, digestion and immune system.

Also known as Huang Qin, Baikal skullcap is one of the most important “heat-clearing” herbs in Traditional Chinese Medicine. It is quite different from the American species, Scutellaria lateriflora, which is used mainly as a calming nervine; in contrast, S. baicalensis is used for hot, irritated conditions such as fevers, chest infections, allergies and digestive inflammation (see below for more details on the differences between the three main skullcap species).

Native to dry, open slopes in northern China, Mongolia and Siberia, Baikal skullcap is well suited to sunny, well-drained positions in the herb garden. It is a hardy perennial that forms clumps of narrow leaves and purple-blue flowers. The roots are harvested in the plant’s second or third year, once they have developed their characteristic yellow colour.

Additional information

Soil
Height
Recommended Sowing Times
Sunlight
Water
Life Cycle

Perennial

Flowering

June, July, August

Hardiness

H5 (hardy – cold winter)

Herbal Uses

Circulation, Immunity, Liver, Mood, Nervous system, Sleep

Flower Colour(s)

Purple

UK Native

No

Can be sown direct?

Yes

General Uses

Medicinal

Make Your Own

Capsule, Cream, Glycerite, Herbal pills & lozenges, Herbal Tea, Tincture

Herbal Tradition

Chinese (TCM)

Stratification Needed?

Cold-moist stratification helps but not essential