Verbena, a fragrant herb widely recognized for its refreshing citrusy aroma and delicate flavor, holds a significant place in both traditional and modern practices, particularly in Morocco. While the term “verbena” can refer to a genus with around 150 species, the most commonly known and used variety for its aromatic and medicinal properties is Lemon Verbena, scientifically known as Aloysia citrodora (also Lippia citriodora or Aloysia triphylla). Another important species is Verbena officinalis, often simply called vervain or common verbena.
Basic Description of Lemon Verbena (Aloysia citriodora)
Lemon Verbena is a perennial shrub or subshrub belonging to the Verbenaceae family. Native to South America, it was introduced to Europe in the 17th century by the Spanish and Portuguese and has since been cultivated globally, with Morocco being a significant producer, particularly in regions like Ghmat and Beni Mellal.
The plant typically grows to a height of 2 to 3 meters (7 to 10 feet) and features slender, branching stems and lance-shaped, glossy leaves that can reach up to 8 centimeters (3 inches) in length. These leaves are slightly rough to the touch and release a powerful, distinctive lemon scent when bruised, a characteristic that gives the plant its common name. The plant produces small, pale lavender or white flowers in delicate spikes during the summer months.
Alternate Names in Morocco
In Morocco, Lemon Verbena is popularly known as “Louisa” or “Ma Louisa”. This name is deeply ingrained in Moroccan culture, reflecting its widespread use in everyday life, particularly in the preparation of tea. The name “Louisa” is believed to have originated from “Aloysia citrodora,” a botanical name given to honor Maria Luisa, Princess of Parma and wife of Spanish King Charles IV. Another less common, but still recognized, nickname for Lemon Verbena is “Herb Louisa.”
Uses of Verbena in Morocco and Beyond
Verbena, especially Lemon Verbena, has a diverse range of applications, spanning culinary, traditional medicine, and cosmetic uses.
1. Culinary Uses:
- Herbal Tea (Tisane): This is perhaps the most popular use of verbena in Morocco. Dried or fresh verbena leaves are steeped in hot water to create a soothing and aromatic herbal tea. This “Louisa tea” is often consumed on its own or, very commonly, added to traditional Moroccan mint tea to impart a refreshing citrus note. It’s a staple drink served at various occasions and is cherished for its flavor and calming properties.
- Flavoring Agent: The distinctive lemon flavor of verbena makes it a versatile ingredient in various culinary preparations. It can be used to flavor desserts, jams, jellies, fruit salads, custards, and even savory dishes like poultry and fish. Its essential oil is used in food flavors, particularly in beverages and candies, to provide fresh, lemon-grass, and fruity notes.
- Infused Milk: In Morocco, it’s common to find “vervain milk” or “Louisa milk,” where dried verbena leaves are steeped in warm milk, often with honey, creating a comforting and relaxing beverage, particularly enjoyed during winter.
2. Traditional Medicinal Uses: Verbena has been a cornerstone of traditional medicine for centuries, prized for its array of purported health benefits. In Morocco, it’s extensively used in phytotherapy.
- Digestive Aid: Verbena is traditionally used to alleviate various digestive discomforts, including indigestion, gas, bloating, stomach cramps, and even mild cases of diarrhea and constipation. Its carminative properties are believed to soothe the digestive tract and promote healthy digestion.
- Sedative and Anxiolytic: One of the most well-known traditional uses of verbena is for its calming and relaxing effects. It’s frequently used to reduce nervousness, anxiety, and promote sleep. In Morocco, it’s often given as an infusion to newborns for its sedative and myorelaxant properties. Studies suggest that compounds in verbena, such as verbenalin, may interact with GABA receptors in the brain, contributing to its tranquilizing effects.
- Anti-inflammatory: Traditional practices employ verbena to reduce inflammation. This makes it a popular remedy for conditions like arthritis and general body aches.
- Respiratory Support: Verbena has been used to address respiratory ailments such as sore throats, coughs, asthma, and even whooping cough.
- Fever Reduction: In some traditional practices, verbena tea is consumed to help break a fever by inducing sweating.
- Menstrual Relief: Verbena is considered a traditional herb for alleviating menstrual cramps (dysmenorrhea).
- Liver and Gallbladder Support: Historically, verbena has been used for liver and gallbladder issues, jaundice, and kidney problems.
- External Applications: In traditional Moroccan medicine, verbena has been used topically for its healing properties, applied to wounds, burns, scrofula, abscesses, and pimples.
3. Cosmetic and Aromatherapy Uses:
- Perfumes and Fragrances: Due to its strong and pleasant lemon scent, verbena essential oil is a valuable ingredient in the perfume industry, providing fresh top notes.
- Skincare Products: Verbena extracts are incorporated into various cosmetic products for their tonic, healing, and soothing properties. They are found in firming body milks, aftershave lotions, facial creams, and products for dry, delicate, sensitive, mature, and combination skin, as well as for cellulite.
- Soaps and Body Care: Moroccan beauty brands often feature verbena in traditional soaps (like those with argan oil and shea butter), shower gels, body oils, and scrubs for a refreshing and aromatic cleansing and moisturizing experience.
Health Benefits of Verbena
Modern scientific research has begun to explore and validate many of the traditional uses and perceived health benefits of verbena, particularly Lemon Verbena.
- Potent Antioxidant Properties: Lemon verbena is a rich source of various plant compounds, including terpenoids and phenolic compounds like verbascoside, geranial, neral, luteolin, and limonene. These compounds exhibit strong antioxidant activity, helping to protect the body against cell damage caused by harmful free radicals and oxidative stress. Studies have shown that verbena extracts can enhance the body’s antioxidant defenses.
- Anti-inflammatory Effects: The anti-inflammatory compounds in verbena may help reduce inflammation throughout the body. Some human studies have indicated that lemon verbena supplements might lower levels of inflammatory markers like C-reactive protein and interleukin-6.
- Reduces Oxidative Stress and Muscle Damage: Research suggests that verbena supplements may help reduce oxidative stress and protect against exercise-induced muscle damage, especially in individuals engaging in intense physical activity.
- Anxiolytic and Sedative Properties: Studies have demonstrated that Verbena officinalis possesses anxiolytic (anti-anxiety) and sedative activities, providing a scientific basis for its traditional use in treating anxiety, depression, and insomnia. It has been shown to reduce the onset time of sleep and increase sleep duration in some animal models.
- Antiproliferative Activity: Some in vitro and in vivo studies have indicated that Aloysia citrodora extracts may have antiproliferative effects, meaning they could inhibit the growth of certain cells, including tumor cells. However, more extensive research is needed in this area.
- Digestive Health: While more research is needed, the traditional use of verbena for digestive issues aligns with its observed properties that may promote gut comfort.
- Potential for Weight Management: Some claims suggest verbena is useful for weight loss and obesity problems, but scientific evidence directly linking verbena to significant weight loss is limited and requires further investigation.
- Skin Health: The topical application of verbena extracts in cosmetics is supported by its antioxidant, soothing, and tonic properties, contributing to healthier and more radiant skin.
While the benefits of verbena are numerous and well-regarded in traditional practices, it’s important to note that some health claims require more robust scientific validation through extensive human trials. Nonetheless, its long history of safe use and the growing body of research support its value as a natural remedy and a delightful aromatic herb.