Lemon Grass (Mchaichai)

“Mchaichai” — the fragrant “tea grass” found in every Tanzanian home. Used for stomach aches, fever, stress relief, and as a soothing daily tea. Also known as Fever Grass.

Categories: Culinary Herbs, Encyclopedia, Herbs Tags: Digestive Health, Immune Support, Malaria & Fever, Pain & Inflammation, Sleep & Stress

Description

Lemon Grass (Mchaichai in Kiswahili, meaning “tea grass”) is one of the most beloved and widely used medicinal plants in Tanzania. Found in almost every home garden, it is used for both daily wellness and acute conditions. The plant’s distinct lemon aroma and flavor come from citral, a compound with documented medicinal properties.

This aromatic perennial grass grows in dense clumps, reaching heights of 1-1.5 meters. The long, slender, sharp-edged leaves are bright green and release a strong lemon scent when crushed. The plant rarely flowers when grown in cultivation, as it is typically propagated by root division.

Lemon Grass is not only a medicinal plant but also a valuable culinary herb, used to flavor teas, soups, curries, and other dishes across Tanzania and beyond. Its essential oil (citronella) is a well-known natural insect repellent.

For detailed information on uses, preparation, and safety, please explore the tabs below. To purchase, contact any of the healers listed in the “Where to Buy” tab.

Cultural Significance

Lemon Grass is so common in Tanzanian households that its Kiswahili name “Mchaichai” (tea grass) reflects its primary use as a daily herbal tea. It is often given to children with upset stomachs and to adults suffering from colds and fevers.

In many Tanzanian homes, a pot of lemon grass tea is always available, served to guests as a welcoming and soothing beverage. The tea is often sweetened with honey and sometimes combined with ginger, turmeric, or other herbs.

The essential oil of lemon grass (citronella) is widely used as a natural insect repellent, protecting families from mosquitoes and other biting insects. Citronella candles and oils are common in both rural and urban areas.

Scientific Name: Cymbopogon citratus

Family: Poaceae (Grass family)

Kiswahili: Mchaichai, Mchai, Mchai wa Kijani, Mchai wa Kinyasi
English: Lemon Grass, Fever Grass, Citronella Grass
Ganda (Uganda): Kisubi
Kamba (Kenya): Muthithi
Kikuyu (Kenya): Muthithi
Luhya (Kenya): Inzatsi yechai
Luo (Kenya): Odongo
Arabic: Hashishat al laymoun
Hindi: Gavatigachha
Nepali: Hariyali ghans

Lemon Grass is one of the most beloved and widely used medicinal plants in Tanzania. Found in almost every home garden, it is used for both daily wellness and acute conditions. The plant's distinct lemon aroma and flavor come from citral, a compound with documented medicinal properties.

Digestive Health

Lemon Grass tea is a trusted remedy for stomach pain, bloating, nausea, indigestion, and intestinal spasms. The tea is also used for children with upset stomachs. The leaves contain compounds that help relax smooth muscle tissue in the digestive tract.

Malaria and Fever

A strong decoction of Lemon Grass leaves is traditionally used to induce sweating and reduce fever. It is often combined with other antimalarial plants like Neem or African Wormwood for enhanced effect. The tea is taken hot, 2-3 times daily during fever.

Sleep and Stress Relief

Lemon Grass has mild sedative and anxiolytic (anti-anxiety) properties. A warm cup of Lemon Grass tea drunk in the evening promotes relaxation, reduces stress, and improves sleep quality. It is a safe, non-addictive alternative for mild insomnia.

Immune System Support

Regular consumption of Lemon Grass tea is believed to strengthen the body against illness. The plant's antimicrobial and antioxidant properties help support overall immune function.

Pain and Inflammation

The essential oil of Lemon Grass (citronella) is used externally for muscle pain, joint pain, and rheumatism. The oil is diluted in a carrier oil (such as coconut oil) and massaged into affected areas. The tea is also used internally for general body aches.

Other Medicinal Uses

Lemon Grass is also used as a natural insect repellent (the essential oil is the active ingredient in many citronella products), for oral hygiene (as a mouthwash), for high blood pressure (mild diuretic effect), and as a general tonic for fatigue and weakness.

Dosage Guidelines

Adults (Tea): 2-3 cups daily for wellness; up to 4 cups daily for acute conditions
Adults (Strong Decoction for Fever): 1/2 cup, 3-4 times daily
Children (6-12 years): 1/4 to 1/2 cup of standard tea, 2-3 times daily
Children (1-5 years): 1/4 cup of standard tea, 2 times daily
External use (Oil): Apply to affected area 2-3 times daily as needed
Steam inhalation: Once or twice daily for respiratory symptoms
Note: Lemon Grass is generally considered very safe for regular, daily use in food and tea amounts.

Contraindications

Pregnancy: Generally safe in food and tea amounts. Medicinal doses (strong decoctions) should be discussed with a healthcare provider.
Breastfeeding: Generally safe in normal tea amounts. Avoid excessive medicinal doses.
Kidney issues: Very high, prolonged use may affect kidney function in susceptible individuals (rare). Stick to normal tea consumption.
Allergies: Rare reports of contact dermatitis in sensitive individuals. Perform a patch test before using essential oil on skin.
Surgery: May lower blood pressure in very high doses. Discontinue medicinal use 2 weeks before scheduled surgery.
Chemotherapy: May interfere with certain chemotherapy drugs. Consult your oncologist before using medicinal amounts.

Phytochemistry

Lemon Grass contains citral (which is a mixture of geranial and neral), geraniol, limonene, citronellal, and other volatile compounds. The essential oil content ranges from 0.2-0.5% in fresh leaves.

Antimicrobial Activity

Research has demonstrated that Lemon Grass essential oil has significant antibacterial and antifungal activity against a wide range of pathogens, including E. coli, Staphylococcus aureus, and Candida albicans. This supports its traditional use for infections and as a preservative.

Anti-inflammatory and Analgesic Effects

Studies have confirmed the anti-inflammatory and pain-relieving properties of Lemon Grass, supporting its traditional use for rheumatism, muscle pain, and arthritis. The citral content is believed to be responsible for these effects.

Anxiolytic (Anti-anxiety) Properties

Research has shown that Lemon Grass tea has mild sedative and anxiety-reducing effects. A 2015 study found that inhaling Lemon Grass essential oil reduced anxiety in dental patients. This supports its traditional use for stress relief and sleep improvement.

Antioxidant Properties

Lemon Grass contains flavonoids and phenolic compounds with significant antioxidant activity. This helps protect cells from oxidative damage and supports overall health.

Safety Profile

Lemon Grass is generally recognized as safe (GRAS) by the U.S. FDA for use in food. It has been used safely for centuries in traditional medicine with few reported adverse effects when used appropriately.

Culinary Uses of Lemon Grass (Mchaichai)

Lemon Grass is a beloved culinary herb in Tanzania and across East Africa. Its bright, citrusy flavor and aroma make it a versatile ingredient in both savory dishes and beverages. The plant's fragrant leaves and tender lower stems are used fresh or dried to infuse dishes with a refreshing lemon-like essence without the acidity of actual lemon juice [citation:1].

🇹🇿 In Tanzanian & Swahili Cuisine

Mchaichai Tea: The most common use—fresh or dried lemon grass leaves are steeped in hot water to make a soothing, aromatic herbal tea. Often served with honey or ginger [citation:4].
Spice Blends: Lemon grass is a key aromatic in Swahili cuisine, used alongside clove, nutmeg, cinnamon, and black pepper to create the distinctive flavors of Zanzibar, known as the "Spice Island" [citation:3].
Nyama Choma Marinade: Fresh lemon grass is crushed and added to marinades for grilled meat (Nyama Choma), combined with garlic, lemon juice, curry powder, and turmeric [citation:3].
Pilau Rice: Lemon grass stalks are added while cooking pilau rice, infusing the dish with a subtle citrus aroma that complements the traditional cardamom, clove, and cinnamon [citation:3].

🌍 International Culinary Uses

Tom Yum Soup (Thai): Fresh lemon grass is an essential ingredient in this famous hot and sour soup, along with kaffir lime leaves, galangal, and chilies [citation:9].
Tom Kha Kai (Thai Coconut Chicken Soup): Lemon grass provides the citrusy base for this creamy, aromatic coconut soup [citation:1].
Curries and Stir-fries: Finely sliced lemon grass stems are added to curry pastes and stir-fried dishes throughout Southeast Asia [citation:9].
Roasted Chicken and Lechon: In the Philippines, lemon grass (tanglad) is traditionally used to stuff roasted chicken and lechon (roasted pig), imparting a fragrant citrus flavor [citation:1].
Marinades for Seafood and Meat: The tender inner stems are crushed and mixed with garlic, chili, fish sauce, and sugar to create aromatic marinades [citation:1].
Herbal Infusions and Cocktails: Lemon grass is brewed into herbal teas, added to lemonade, and used as a flavoring in cocktails and mocktails [citation:4][citation:6].

🍵 Simple Lemon Grass Tea Recipe

Ingredients:

1-2 fresh lemon grass stalks (or 2 tablespoons dried)
2 cups water
Optional: fresh ginger, honey, or lemon juice

Instructions:

Bruise the lemon grass stalks by crushing lightly with a rolling pin or knife handle to release the oils [citation:4].
Chop into 2-inch pieces.
Bring water to a boil in a small pan.
Add lemon grass (and ginger if using).
Reduce heat and simmer for 5-8 minutes [citation:4].
Strain into a cup. Add honey or lemon to taste.

Pro tip: For a stronger tea, bruise the stalks more thoroughly or steep longer.

🍽️ How to Prepare Lemon Grass for Cooking

Fresh Stalks: Remove the woody outer leaves. Use the tender white-yellowish inner part of the lower stem (about 4-6 inches from the base). Bruise or slice thinly before adding to dishes [citation:1].
Dried Lemon Grass: Available in many Tanzanian markets. Rehydrate briefly in warm water before use, or add directly to soups and stews [citation:6].
Lemon Grass Paste: Blend fresh lemon grass with a little water or oil to make a paste for marinades and curry bases.
Frozen Lemon Grass: Fresh lemon grass can be chopped and frozen in ice cube trays with water or oil for easy portioning.

🌿 Storage Tips

Fresh: Wrap in a damp paper towel and store in a plastic bag in the refrigerator for 1-2 weeks.
Dried: Store in an airtight container away from sunlight for up to 6 months [citation:6].
Frozen: Chop and freeze in a sealed bag for up to 6 months.

💡 Culinary Tips from Zanzibar Spice Farms

On Zanzibar spice tours, visitors learn that lemon grass is one of the most versatile spices grown on the island. It is often planted around homes not only for cooking but also to naturally repel mosquitoes [citation:2][citation:10]. Local cooks recommend adding a stalk of lemon grass to the water when boiling rice for an aromatic twist, or placing a few leaves in the steamer when cooking fish or vegetables [citation:2].

Note: Unlike lemon juice, lemon grass provides citrus flavor without acidity, making it ideal for people who need to avoid acidic foods. The essential oil (citral) is what gives lemon grass its characteristic scent and taste [citation:1].

⚠️ Important Warnings

Pregnancy: Lemon Grass is generally safe in food and tea amounts (1-3 cups daily). Strong medicinal decoctions should be discussed with a healthcare provider before use during pregnancy.
Breastfeeding: Generally safe in normal tea amounts. Avoid excessive medicinal doses (more than 4 cups of strong decoction daily) while breastfeeding.
Kidney issues: Very high, prolonged use (months of excessive consumption) may affect kidney function in susceptible individuals. Stick to normal tea consumption (2-3 cups daily).
Allergies: Rare reports of contact dermatitis from handling the leaves or using the essential oil. Perform a patch test before applying lemon grass oil to skin.
Surgery: May lower blood pressure in very high medicinal doses. Discontinue medicinal use (strong decoctions) 2 weeks before scheduled surgery.
Chemotherapy: May interfere with certain chemotherapy drugs. Consult your oncologist before using medicinal amounts if undergoing cancer treatment.
Children: Safe for children in appropriate doses (weaker tea, 1/4 to 1/2 cup). For children under 1 year, consult a healthcare provider before use.

📋 General Advice

Lemon Grass is one of the safest medicinal plants and is generally recognized as safe (GRAS) for use in food and tea. For daily wellness, 2-3 cups of standard tea is considered safe for long-term use. For medicinal purposes (fever, pain, digestive issues), stronger decoctions can be used for 7-14 days consecutively. Always start with a lower dose to assess your tolerance.

When using lemon grass essential oil (citronella), always dilute with a carrier oil (coconut oil, almond oil) before applying to skin. Never ingest the essential oil unless under professional guidance.

🔍 Proper Identification

Lemon Grass (Cymbopogon citratus) has long, sharp-edged, bright green leaves with a strong lemon scent when crushed. The bulbous base of the stalks is white to light green. It grows in dense clumps. Distinguish from Citronella Grass (Cymbopogon nardus), which has a stronger, less pleasant scent and is not typically used for tea. Lemon Grass is safe for internal use; Citronella Grass is primarily used as an insect repellent and should not be ingested.

Disclaimer: The information provided is for educational purposes only and is not medical advice. Lemon Grass is generally considered safe for most people when used in normal tea amounts. Always consult a qualified healthcare provider before starting any new herbal remedy, especially if you are pregnant, nursing, have kidney disease, or are taking medications.

Lemon Grass is cultivated throughout Tanzania in home gardens, urban areas, and small farms. It is found from coastal regions to highland areas, thriving in tropical and subtropical climates with adequate water and full sun exposure.

The plant grows in dense clumps, reaching heights of 1-1.5 meters. It is a perennial grass that can be harvested year-round. Lemon Grass is native to Southeast Asia but has been naturalized across Africa for centuries and is now considered a traditional African medicinal plant.

In Tanzania, Lemon Grass is widely available in local markets and is often grown near homes for easy access. It requires minimal care, tolerates drought once established, and can be grown in containers or directly in the ground.

No healers currently offer this remedy.