Lemongrass Organic Farming — Complete Guide for India

Lemongrass (Cymbopogon flexuosus — East Indian lemongrass; C. citratus — West Indian lemongrass) is one of India’s most important aromatic/essential oil crops. India exports approximately 80% of global lemongrass essential oil, with Kerala and Karnataka as primary producers. Organic certified lemongrass oil commands ₹2,500–4,000/kg versus ₹1,500–2,500/kg conventional — and with domestic demand from Ayurveda, cosmetics, and food flavour industries also growing rapidly, market access is generally not a constraint. The crop is hardy, drought-tolerant, grows on marginal and degraded soils, requires minimal management once established, and can be harvested 3–4 times per year. Net income of ₹60,000–1.5 lakh/acre is achievable depending on oil extraction setup.

Which Two Lemongrass Species Target Which Markets?

Cymbopogon flexuosus (East Indian, Malabar lemongrass):

• Primary oil crop; used for extracting lemongrass essential oil
• Major oil component: citral (75–80%) — used in vitamin synthesis, fragrance, food flavour
• This species is what most Karnataka organic farmers grow for oil extraction

Cymbopogon citratus (West Indian, Cochin lemongrass):

• Thicker stalks; milder lemon aroma
• Used more for culinary applications (lemongrass tea, Thai cooking)
• Fresh stalks market: urban restaurants, herbal tea companies

For essential oil production: C. flexuosus. For fresh culinary market: C. citratus. Both can be grown together for diversified income.

Which Varieties Give the Best Oil Yield?

• Pragati: Highest oil yield; 7–8% oil content from fresh biomass; most widely recommended variety for commercial oil production in India; available from CIMAP (Central Institute of Medicinal and Aromatic Plants), Lucknow
• OD-19 (Arka Nilgiri): Good oil content; well-adapted to South Indian conditions including Karnataka; CIMAP and IIHR-certified material available
• Krishna: CIMAP selection; high oil content; drought-tolerant; suited for dry areas of Karnataka
• CKP-25: High biomass yield; suitable for areas where fresh leaf supply to tea companies is the model (lower oil content, higher leaf volume)

Source certified planting material from CIMAP or Karnataka horticulture department for disease-free, high-oil-content clones.

What Soil Does Lemongrass Need and How Do You Establish It?

Lemongrass grows in:

• Sandy loam to loamy soils; pH 5.5–7.5
• Marginal and degraded soils — this is one of its strongest attributes
• Well-drained; waterlogging causes root rot
• Moderate to good sunlight essential

Field preparation:

1. Plough to 20 cm; prepare to medium tilth
2. Apply 1 tonne vermicompost or 2 tonnes FYM per acre
3. Neem cake 150 kg/acre for nematode suppression

Planting: Slips (vegetative divisions from established clumps); 30 cm × 30 cm spacing (approximately 14,500 plants/acre for intensive; 45 cm × 45 cm for regular system: 6,400 plants/acre).

Season: June–July (monsoon onset) for rainfed; any season with irrigation.

Seed (slip) rate: 2,500–5,000 slips per acre; each slip divided from established clump.

What Organic Nutrition Does Lemongrass Need?

Lemongrass is a light to moderate feeder for a grass crop:

• At planting: 1 tonne vermicompost + 150 kg neem cake broadcast and incorporated
• Monthly jeevamrutha drench: 200 litres/acre during growing season; critical for oil content and citral quality
• After each harvest: 500 kg vermicompost/acre top-dress + jeevamrutha drench
• Panchagavya foliar: 3% spray every 30 days — increases leaf density and oil gland development

How Do You Manage Pests and Disease in Lemongrass?

Lemongrass has very few pest or disease problems — its essential oil content naturally deters most insects. Ironic for an insect repellent crop.

Grassy shoot virus: Causes multiple thin weak shoots (phytoplasma disease); spread by leafhoppers. Remove infected clumps; spray neem oil 5 ml/L to control leafhopper vectors.

Leaf blight (Helminthosporium): Occasional in wet humid conditions; copper oxychloride 3g/L spray at first yellowing; ensure good air circulation.

Red spider mite: In dry conditions; spray neem oil + soap solution.

No regular spray programme needed — very low pest management cost.

How and When Do You Harvest Lemongrass?

First harvest: 75–90 days after planting. Subsequent harvests: every 60–75 days (3–4 per year).

Harvesting: Cut grass 10–15 cm from ground. Do NOT cut to ground — the growing point at base must remain undamaged. Cutting too deep kills the ratoon and requires replanting.

Yield: 15–25 tonnes fresh biomass/acre/year (3–4 harvests); Oil yield: 15–25 kg oil/acre/year at 6–8% oil content from fresh biomass.

Oil extraction: Requires steam distillation unit. Small farm-scale distillation units cost ₹50,000–1.5 lakh depending on capacity (50–200 kg biomass/batch). Return on investment within 1–2 years at current oil prices. Farmers without their own still: sell fresh biomass to distillers at ₹1.50–3/kg.

Which of the Two Income Models Should You Choose?

Fresh biomass sale (no distillation):

• Sell fresh grass at ₹2–3/kg to local distilleries or herbal companies
• Income: 20,000 kg × ₹2.50 = ₹50,000/acre/year
• Input costs: ₹12,000; Net: ₹38,000/acre

Own distillation (maximum income):

• Distil own crop: 20,000 kg fresh biomass → 150 kg oil (0.75% average)
• Sell organic certified oil at ₹3,000/kg: ₹4,50,000 revenue
• Input + distillation cost: ₹80,000; Net: ₹3.7 lakh/acre
• Distillation unit amortised over 10 years: ₹10,000–15,000/year additional cost

The difference between fresh biomass sale and own distillation is dramatic. Forming a farmer collective with a shared distillation unit is the recommended path for Organic Mandya members.