Lemon Balm

The lemon balm plant has been valued for thousands of years because of its sweet-lemony scent and medicinal benefits. Learn more about this fragrant herb below.

Quick Facts
General Information
  • Common name(s)Lemon balm, balm, sweet balm
  • Scientific nameMelissa officinalis
  • Plant typeHerb
  • Native regionWestern Europe, Southern Europe, Eastern or Central Europe
  • Main producer(s)India, United States of America
  • Main Economic UseMedicinal, Cosmetics
Medicinal and Nutritional Information
  • Medicinal actionAntiviral, Anxiolytic, Sedative
  • Key constituentsRosmarinic acid, caffeic acid
  • Ways to useCapsules, Hot infusions/tisanes, Liquid extracts, Tincture, Ointment, Essential oil
  • Medicinal rating(3) Reasonably useful plant
  • Safety rankingSafety undetermined
How to Consume
  • Edible partsLeaves
  • Edible usesFlavoring
  • TasteSweet
Buying
  • Where to buySupermarkets, Farmers' markets, Specialized health stores, Online herb stores, Organic markets, Online health stores
Growing
  • Life cyclePerennial
  • Harvested partsFlowers, Leaves, Stem
  • Light requirementsFull sun
  • SoilLight (sandy)
  • Soil pH6.6 – 7.3 (Neutral)
  • Growing habitatTemperate climates
  • Planting timeRight after last frost
  • Plant spacing average0.5 m (1.64 ft)
  • Propagation techniquesRoot cuttings
  • Potential insect pestsAphids, Mites
  • Potential diseasesRoot rot, Powdery mildew
Additional Information
  • Other usesAlcohol, Cosmetics, Perfume, Repellent
Lemon Balm

Lemon balm's history of human use reportedly started over 2,000 years ago, when the herb was used ceremonially in temples dedicated to Rhea, also known as Cybele, the Greek Earth goddess, in and around Ephesus (modern day Turkey). Later, it appeared in Pliny's herbal treatises as an established part of Roman herbal medicine. The use of the lemon balm herb as a tea was introduced to the Americas by Europeans in the 16th century, and its popularity as a remedy continued even to this day.

Medicinal and Nutritional Information

Quick Facts (Medicinal and Nutritional Information)
  • Medicinal actionAntiviral, Anxiolytic, Sedative
  • Key constituentsRosmarinic acid, caffeic acid
  • Ways to useCapsules, Hot infusions/tisanes, Liquid extracts, Tincture, Ointment, Essential oil
  • Medicinal rating(3) Reasonably useful plant
  • Safety rankingSafety undetermined

Health Benefits of Lemon Balm

While the lemon balm plant is traditionally valued for its anxiolytic and sedative properties, modern research also suggests that it holds antiviral effects, all of which potentially lend it to the following medicinal uses:

  • Treating herpes simplex infections. The lemon balm herb is commonly used to relieve cold sores. Its antiviral action inhibits the virus's replication.

  • Reducing stress and anxiety. Lemon balm's mechanism of action for easing anxiety is not yet fully understood, but it is often used in conjunction with other sedative herbs, namely valerian.

  • Relieving insomnia. Likewise, the lemon balm herb's sedative properties can be used to promote sleep.

In addition, the lemon balm plant is thought to interact with the antibodies involved in Graves' disease, reducing their effects. Thus, studies have suggested that lemon balm may be useful in the treatment of this form of hyperthyroidism.

How It Works

The lemon balm plant contains a unique and varied combination of tannins, terpenes, and eugenol, all of which are responsible for its medicinal benefits.

Its high levels of polyphenolic compounds, such as caffeic acid, p-coumaric acid, and rosmarinic acid, are thought to be behind its antiviral and sedative properties. However, the mechanism of action of lemon balm is yet to be fully understood.

Similar antimicrobial properties can be found in cranberry and oregon grape, whereas passion flower and valerian also exhibit anti-anxiety and sedative actions.

Lemon Balm Side Effects

Lemon balm is mostly safe for oral and topical consumption, and its sedative effects are not intensified by alcohol. However, if it is ingested in excessive amounts, it may cause dependency and decrease alertness.

Lemon Balm Cautions

The lemon balm herb may interact with sedatives, thyroid medications, and HIV drugs, so those taking these medications should avoid lemon balm. As with all herbal supplements, it's important to consult with a physician before starting a regimen, especially for those who are pregnant or breastfeeding.

How to Consume Lemon Balm

Quick Facts (How to Consume)
  • Edible partsLeaves
  • Edible usesFlavoring
  • TasteSweet

While it has some culinary uses, the most effective way of obtaining lemon balm's numerous health benefits is in medicinal forms of consumption, where its properties are more concentrated.

Remedies

Main preparations: Tea, tincture, extract, salve or ointment, essential oil, oil, cream, capsules

Lemon balm remedies are derived from the leaves of the lemon balm plant. They can be taken internally or externally, depending on the intended use.

  • Tea. Lemon balm tea is the most popular preparation for stress relief purposes, as the hot liquid and steam enhance the relaxing effect. The tea can also be dabbed onto cold sores with cotton balls.
  • Tincture. Rather than steeping the leaves, a lemon balm tincture may be diluted in hot water to relieve stress and anxiety, usually about 60 drops in one to two cups of water.
  • Extract. Since it doesn't include alcohol, lemon balm extract is ideal for children. A few drops diluted in a cup of water or juice will reduce anxiety and induce sleep.
  • Salve or ointment. Lemon balm salve, also known as lemon balm ointment, can be applied directly to cold sores caused by the herpes virus to reduce redness and swelling, as well as to prevent them from recurring.
  • Essential oil. Lemon balm essential oil may be used for relaxation in an aromatherapy context, but it should never be ingested.
  • Oil. Lemon balm oil is mostly used for topical treatment of herpes lesions. However, since it doesn't get easily absorbed and forms a protective layer over the skin, it can be used as a lip balm, facial cleanser, and moisturizer.
  • Cream. Lemon balm cream's water content allows for quick absorption and it is often used for the topical treatment of cold sores, as well as for daily skin care, due to its astringent and soothing actions.
  • Capsules. Lemon balm capsules and coated tablets have also been used for their anxiolytic effects. They provide a consistent dosage without the lemon balm herb's characteristic taste.

Food

The lemon balm herb appears in culinary preparations strictly as a flavoring, most often in beverages and dairy products. Even the small amount of lemon balm extract that flavors such products has been shown to reduce anxiety and improve concentration.

Buying

Quick Facts (Buying)
  • Where to buySupermarkets, Farmers' markets, Specialized health stores, Online herb stores, Organic markets, Online health stores

Fresh and Dried Lemon Balm

Lemon balm tea is easy to find in grocery stores and local markets around the world. The most common presentations also include the herb's dried petals. Fresh lemon balm, on the other hand, can be easily grown in any garden or be found within parks and along road borders, as well as in specialized stores and ethnic markets.

Lemon Balm Supplements

Lemon balm extract is among the most common products in herbalist stores, and it is available in some natural or organic cosmetic product retailers. Lemon balm capsules and pills can also be found in specialized health stores or through online retailers. Furthermore, in many parts of Europe -like Germany, France, and the U.K.- mixed herbal tonics made primarily from lemon balm (like Carmelite water) can be obtained in pharmacies.

It's worth bearing in mind that each brand of lemon balm supplement can come with different concentrations.

Growing

Quick Facts (Growing)
  • Life cyclePerennial
  • Harvested partsFlowers, Leaves, Stem
  • Light requirementsFull sun
  • SoilLight (sandy)
  • Soil pH6.6 – 7.3 (Neutral)
  • Growing habitatTemperate climates
  • Planting timeRight after last frost
  • Plant spacing average0.5 m (1.64 ft)
  • Propagation techniquesRoot cuttings
  • Potential insect pestsAphids, Mites
  • Potential diseasesRoot rot, Powdery mildew

Because of its agreeable, mildly lemony scent, lemon balm is considered an aromatic herb, typically grown in gardens and other landscaped areas for its fragrance and its ability to attract pollinators. Although lemon balm is a very drought resistant and hardy herb, some basic care will ensure successful cultivation.

Growing Guidelines

  • It is advised that lemon balm seeds be sown in soils rich in organic matter with an adequate structure that promotes good drainage.

  • Although they develop best in average, dry to medium, well-drained soils with a neutral pH, lemon balm plants adapt well to a wide range of soils, including poor ones with pH levels ranging from 4.5 - 7.6 in full sun.

  • In cooler regions, lemon balm seedlings should be planted after the last frost.

  • Seeds or cuttings should be spaced 20 inches (50 cm) apart in order to foster optimum growth.

  • Frequent pruning, including removal of spent flower stalks, will encourage new leaves to grow and intensify their fragrance.

  • Since lemon balm plants spread quickly through self-seeding, their growth need to be controlled by pruning and planting them in containers. Unpruned plants may acquire a somewhat weedy appearance.

  • Lemon balm plants can be affected by weeds, as well as by some pests and diseases.

More detailed information about growing lemon balm can be found in the herb garden section.

Additional Information

Quick Facts (Additional Information)
  • Other usesAlcohol, Cosmetics, Perfume, Repellent

Plant Biology

Lemon balm is a bushy perennial plant with square branching stems that grow 12 - 24 inches (30 - 60 cm) tall. It has pairs of broadly ovate or heart-shaped, crenated, or toothed leaves at each node. Lemon balm leaves are one to two inches (30-50 mm) long, shiny on top, wrinkled, and deeply veined. Lemon balm flowers are inconspicuous, white or yellowish to pale blue, and they grow in loose, small bunches emerging from the axils of the leaves that appear in late spring to midsummer.

Over the years, many common names have been associated with M. officinalis, including balm, English balm, garden balm, balm mint, common balm, melissa, sweet balm, garden balm, blue balm, heart's delight, and honey plant.

  • Classification
    Lemon balm is a member of the Lamiaceae family, which contains over 7,200 species spread out across 236 genera. This family of flowering plants is often referred to as the mint family, and it contains many important aromatic herbs, including sage, rosemary, peppermint, and basil.
  • Varieties and Subspecies of Lemon Balm
    The genus Melissa includes four accepted species of perennial herbs: M. officinalis L., M. axillaris, M. flava, and M. yunnanensis. However, the most important member of the Melissa genus, with great commercial value, is M. officinalis, which is currently cultivated in many parts of the U.S., including Eastern, Midwestern, and Pacific Northwestern states.

    Many varieties of the lemon balm plant are cultivated across the world, but some of the most popular and easy to find are:

    'Aurea' ('Variegated'). This cultivar shows yellow variegation on new spring growth, which fades when plants flower. After flowering, cut plants back to encourage new variegated shoots.

    'Lime' ('Lime Balm'). It grows up to three feet (1 m) tall but has a distinctive lime aroma. It is thought to not be a distinct variety of the species.

    'All Gold'. This variety has richly scented, pubescent leaves that keep their bright yellow coloration throughout the season. It grows up to 1.5 feet (46 cm) tall.

Historical Information

Lemon balm has enjoyed great popularity over the ages. By the 11th century, the lemon balm herb was used in Persia to treat melancholy and depression, and during the 14th century it was included as part of the original recipe of some famous French beverages, such as Carmelite water, Chartreuse, and Benedictine.

Economic Data

Lemon balm plant is a crop of economic importance. It produces a high yield of essential oils, and it is in great demand both as a cosmetic ingredient and as a medicinal product. Lemon balm yields 10 - 25 metric tons of plant material per hectare. The largest producers of lemon balm are Italy, Hungary, and the U.S.

Other Uses

The most common applications for the lemon balm plant are medicinal. However, its aromatic essential oil, obtained from the leaves and flowers of the plant, is widely used in perfumes and cosmetics, as well as in the food and beverage industry and for aromatherapy, where it is considered one of the major scents for massage oils, candles and incense sticks.

The leaves are used to garnish dishes and juices, and as a flavoring agent in the kitchen.

Additionally, the lemon balm herb has found uses in gardening and also beekeeping, since its sweet smell attracts bees, promoting pollination and discouraging the swarm from migrating.

Lemon balm can be a very useful addition to any herbal garden as it is hardy and low-maintenance. Moreover, this popular herb can be easily found around the world in different forms because of its many health benefits, especially its calming and mildly sedating properties. 

Bibliography

  • USDA Plants Database, PLANTS Profile for Melissa officinalis
  • Journal of Ethnopharmacology, Ethnopharmacological in vitro studies on Austria's folk medicine-An unexplored lore in vitro anti-inflammatory activities of 71 Austrian traditional herbal drugs, 2013
  • University of Maryland Medical Center, Lemon Balm
  • Endocrinology, Extracts and Auto-Oxidized Constituents of Certain Plants Inhibit the Receptor-Binding and the Biological Activity of Graves' Immunoglobulins, 1985
  • Georgetown University, GU Medical Center: Urban Herbs: Lemon Balm Medicinal Uses
  • Natural Product Research, Inhibitory activity of Melissa officinalis L. extract on Herpes simplex virus type 2 replication, 2008
  • Nutrients, Anti-Stress Effects of Lemon Balm-Containing Foods, 2014

DISCLAIMER: The information provided is intended only as a general reference for further exploration, and is not a replacement for professional health advice. This information should be used only under the direct supervision of a qualified health practitioner such as a naturopathic physician. Information contained in HerbaZest.com is based on pharmacological records, scientific research, traditional knowledge and historical data, both old and modern. HerbaZest.com cannot be held responsible for the accuracy of the information provided.