Grow More, Earn More: High-Yield Lemongrass Seedlings for Sustainable Farming Success

Types of Lemongrass

Though there are many species of lemongrass, two are interchangeably used in the United States: West Indian and East Indian lemongrass. These two species are edible, while citronella grass (which is in the same genus) is not.

• West Indian lemongrass (C. citratus) is most favored for culinary use.
• East Indian lemongrass (C. flexuosus) is most favored for aromatherapy, perfumes, and soaps.
• Citronella grass (C. nardus) is related to lemongrass but is not an edible grass species; used as insect repellent in candles and oils and as an ingredient in soap.

When to Plant Lemongrass

Wait until the danger of frost has passed before planting lemongrass, preferably once nighttime temperatures consistently hit 60°F. To start from seed indoors, sow in flats three weeks before the last frost in your growing zone.

Choose a spot in full sun with good drainage. Lemongrass won’t grow well in clay and needs rich, fertile, loose soil. Add sand or consider planting in pots or raised beds if your garden soil is unhealthy. A location protected from strong winds reduces breakage and flattening.

How to Plant Lemongrass

In ideal conditions, lemongrass may grow to 6 feet tall and 4 feet wide, so leave 2 to 3 feet between plants. The planting technique is similar to planting onion slips. Set the grass so the bottoms of the bulbs rest just at the soil line, with roots buried.

Tips for Growing Lemongrass in Kenya

Choose the Right Variety – East African lemongrass (Cymbopogon flexuosus) does well.
Use Irrigation in Dry Areas – Drip systems work best.
Harvest Frequently – Encourages bushy growth.
Dry & Process for Higher Value – Essential oil extraction boosts profits.

Pro tip: Consult with Seed Farm Kenya to get expert advice and quality seedlings for maximized and assured returns.

Care and Management

Lemongrass grows with abundance in areas where conditions mimic the tropical habitat of their origin. This popular herb prefers full sunlight, moist but well-draining soil, and moderate watering.

Light

Plant lemongrass in an area that gets full sunlight, even in hot climates. At least six hours of direct sun per day will meet the plant’s energy needs. Plants growing in shade will be sparse and may attract pests.

Soil

Prepare rich loamy soil or sandy-loamy soil for lemongrass. Create ideal soil by adding organic amendments like compost manure and leaf mold before or at planting time. A general PH range of 5.5–7.5 (slightly acidic to neutral) is favors lemongrass cultivation.

Remember: Soil testing and analysis is a service provided by specialized Seed Farm Kenya agents who afterwards give advice in relation to the test results.

Water

Water lemongrass once or twice weekly to keep the roots constantly moist. Lemongrass is not drought-tolerant and requires regular irrigation throughout the growing season. A 3-inch layer of mulch conserves soil moisture. Potted plants may need to be watered daily.

Rainfall: Rainfall amounting to at least 700–3,000 mm annually will favor lemongrass but lemongrass is drought-tolerant once established.

Temperature and Humidity

The ideal temperature for lemongrass is 20°C–30°C. Protect lemongrass from freezing temperatures, as it is frost-sensitive and won’t survive temperatures below 15°F. Bring potted plants indoors when temperatures drop below 50°F.

Fertilizer

Feed lemongrass weekly throughout the peak growing season with a nitrogen-rich fertilizer or add a slow-release product with an NPK 6-4-0 at planting time. Alternatively, supplement nutrients by watering with manure tea or add a nitrogen booster such as blood meal.

Propagating Lemongrass

You can easily propagate lemongrass in water. Cut a stalk, removing any leaves, and then place it in a glass of water with the bulb facing downward. Place the glass in a sunny spot and change the water every few days. Once roots have emerged and reach 2 to 3 inches in length, transplant into soil.

Tip: Acquire seedlings that are well propagated and certified at Seed Farm Kenya.

Potting and Repotting Lemongrass

Choose a large pot that is 12 inches wide and deep or a 5-gallon container to support a healthy root system and keep top-heavy plants from tipping over. Use high-quality commercial potting soil premixed with time-released fertilizer.

Seed propagation is also done although it is not recommended as the chances of success are very low.

Planting Techniques

Field Planting

• Spacing: 60 cm × 60 cm (for bush growth) or 90 cm × 45 cm (for mechanical harvesting).

• Planting Depth: 5–7 cm.

• Best Time: Early monsoon or spring.

Container Planting

• Pot Size: Minimum 12–15 inches deep.

• Soil Mix: 50% garden soil + 30% compost + 20% sand.

Harvesting

Use a hand trowel to remove individual stalks, roots, and all, from the clump. Remove the tough outer leaves and prepare the tender white stalks by chopping, or freeze whole stalk pieces for later use. A fast-growing plant, lemongrass can withstand harvest when plants are young.

When to Harvest

The first harvest should preferably be 4–6 months after planting with subsequent harvests recommended every 60–90 days.

Pruning

Shear your plant to about 6 inches high at the end of winter, when they are in their resting phase. You’ll also want to remove any dead, dried-up leaves with clean pruners to make way for new growth. Lemongrass plants rebound quickly and send up new shoots when

Pests and Diseases in Lemongrass Cultivation: Identification, Prevention, and Control

Lemongrass is generally a hardy plant with natural pest-repellent properties due to its strong aroma. However, under certain conditions (poor soil, excess moisture, or high pest pressure), it can be affected by pests and diseases. Most lemongrass pests and diseases can be managed with preventive measures, organic treatments, and good farming practices. Severe infestations may require targeted chemical control, but integrated pest management (IPM) is the best long-term strategy. Below is a detailed guide on common issues and their management.

Common Pests of Lemongrass

Aphids (Aphis spp.)

Symptoms:

• • Curled, yellowing leaves.

  • Sticky honeydew secretion (leads to sooty mold).

  • Ants attracted to honeydew.

• Control Methods:

  • Spray neem oil (2%) or insecticidal soap.

  • Introduce ladybugs (natural predators).

  • Remove heavily infested leaves.

Grasshoppers & Leafhoppers

Symptoms:

• • Chewed leaves with irregular holes.

  • Reduced plant vigor.

• Control Methods:

  • Use physical barriers (nets).

  • Apply neem-based pesticides.

  • Encourage birds (natural predators).

Spider Mites (Tetranychus spp.)

Symptoms:

• • Fine webbing on leaves.

  • Yellow speckles (stippling) on foliage.

• Control Methods:

  • Spray water to dislodge mites.

  • Apply miticides (if severe).

  • Maintain humidity (mites thrive in dry conditions).

Whiteflies (Bemisia tabaci)

Symptoms:

• • Tiny white insects flying when disturbed.

  • Yellowing, wilting leaves.

Control Methods:

• Yellow sticky traps.

• Neem oil or pyrethrin spray.

Nematodes (Root-Knot Nematodes)

Symptoms:

• • Stunted growth.

  • Swollen root galls.

• Control Methods:

  • Solarize soil before planting.

  • Use nematode-resistant varieties.

  • Apply organic amendments (neem cake, marigold intercropping).

Major Diseases of Lemongrass

Leaf Blight (Helminthosporium spp.)

• Symptoms:

  • Brown/yellow spots with dark margins.

  • Leaves dry and die prematurely.

• Control Methods:

  • Remove infected leaves.

  • Spray copper-based fungicides (Bordeaux mixture).

  • Avoid overhead watering.

Rust (Puccinia spp.)

• Symptoms:

  • Orange-brown pustules on leaves.

  • Weakens plant over time.

• Control Methods:

  • Prune affected leaves.

  • Apply sulfur-based fungicides.

  • Ensure good air circulation.

Root Rot (Fusarium/Pythium spp.)

• Symptoms:

  • Wilting despite adequate water.

  • Black, mushy roots.

• Control Methods:

  • Improve soil drainage.

  • Avoid overwatering.

  • Use Trichoderma bio-fungicides.

Bacterial Leaf Spot (Xanthomonas spp.)

• Symptoms:

  • Small, water-soaked spots turning brown.

  • Leaves may drop prematurely.

• Control Methods:

  • Remove infected plants.

  • Use copper sprays.

  • Avoid working in wet fields.

Smut (Ustilago spp.)

• Symptoms:

  • Black powdery spores on leaves/stems.

  • Distorted growth.

• Control Methods:

  • Destroy infected plants.

  • Use disease-free planting material.

Health Benefits of Lemongrass

Digestive Health

 Relieves Indigestion & Bloating – Stimulates digestive enzymes.
Reduces Stomach Cramps – Antispasmodic properties.
Prevents Gastric Ulcers – Citral helps protect the stomach lining.

Anti-Inflammatory & Pain Relief

Reduces Arthritis Pain – Inhibits inflammatory cytokines.
Eases Headaches & Muscle Pain – Acts as a natural analgesic.

Boosts Immunity

Antibacterial & Antiviral – Effective against E. coli, Staphylococcus, and some flu viruses.
Rich in Vitamin C – Enhances white blood cell function.

Lowers Cholesterol & Blood Pressure

Reduces LDL Cholesterol – Citral helps regulate lipid metabolism.
Acts as a Diuretic – Helps flush out excess sodium, reducing hypertension.

Detoxification & Liver Health

Flushes Toxins – Stimulates liver enzymes (cytochrome P450).
Protects Against Fatty Liver – Antioxidants prevent oxidative damage.

Anti-Cancer Potential (Research-Backed)

Citral Induces Apoptosis – May help kill cancer cells (studies on leukemia & breast cancer).
High Antioxidant Activity – Reduces free radical damage.

Mental Health & Stress Relief

Calms Anxiety – Acts as a natural sedative (linalool content).
Improves Sleep Quality – Aromatherapy with lemongrass oil reduces insomnia.

Skin & Hair Benefits

Treats Acne & Fungal Infections – Antimicrobial properties fight P. acnes and ringworm.
Reduces Dandruff – Antifungal action soothes scalp irritation.