Commercial Citronella Grass Farming Guide

Commercial citronella grass cultivation has become a popular agricultural choice for farmers across many parts of India, especially in states like Assam, Uttar Pradesh, Andhra Pradesh, and Karnataka. Citronella is a tall, perennial aromatic grass that grows in large clumps and produces a highly valued essential oil. This oil is widely used in making mosquito repellents, household cleaners, perfumes, and cosmetic items. For farmers who have marginal lands or face issues with wild animals, this crop offers a useful alternative to traditional grains. Cattle, wild boars, and monkeys do not eat or damage citronella grass because of its strong citrus scent and tough leaf texture. This natural protection saves money on fencing and crop security. However, starting this cultivation requires a clear plan for processing and marketing, as raw grass cannot be sold directly without steam distillation. You must also consider that establishing a crop like this requires a multi year commitment since the plants can produce leaves for about four to five years before they need to be replaced with new slips.

Citronella farming overview

To begin commercial cultivation of Java citronella (Cymbopogon winterianus), you must understand the basic physiology of the grass. It is a tufted, perennial aromatic herb that grows to a height of 1.5 to 2.0 meters when mature. The leaves are smooth, long, and linear, containing the oil glands that secrete the volatile essential oil. Unlike other crops that require replanting every year, a single planting of citronella can yield multiple cuts per year and remain productive for up to five years. This makes it an ideal option for growers looking to reduce annual seed and tillage expenses. However, Java citronella should not be confused with Ceylon citronella, as the Java variety has a much higher concentration of key chemical compounds, leading to superior oil quality and higher market prices. Before investing, a farmer should plan the field design, source quality planting material, and locate a nearby steam distillation unit.

Climate and rainfall suitability

Citronella grass thrives in tropical and subtropical regions that experience high temperature and humidity. The ideal temperature for its vegetative growth ranges between 25 and 38 degrees Celsius, with plenty of bright sunshine throughout the year. Areas with annual rainfall between 1500 and 2500 mm are excellent for rainfed cultivation, but the crop can also grow well in drier areas if irrigation is provided. In regions with very cold winters or frost, the growth of the grass slows down significantly, and the oil content in the leaves may decrease. Extended dry spells can cause the leaf tips to turn brown and dry up, which lowers the quality of the harvested biomass. Protecting the crop from extreme weather means selecting fields that get direct sunlight and avoiding heavily shaded areas under big trees.

Soil and land preparation

The grass can adapt to a variety of soils, but it gives the best results on deep, fertile sandy loam soils. Good drainage is the most critical soil requirement for citronella. Soils that are heavy, clayey, or prone to waterlogging must be avoided, as stagnant water will rot the roots within a few days. The crop prefers a soil pH range of 6.0 to 7.5, though it can tolerate slightly acidic or alkaline conditions. If you are planning a commercial plantation, get your soil tested to check its nutrient level and structure. A Soil Health Card will show you if your land needs organic amendments like lime for acidic soils or gypsum for alkaline soils. Soils rich in organic matter help the grass develop healthy root systems and produce more leaves.

Prepare the land thoroughly to ensure a clean, weed-free environment for the young plants. Start by plowing the field two to three times with a tractor-drawn disc plow to break up hard clods and aerate the soil. Follow this with a cultivator to bring the soil to a fine tilth. During the final plowing, mix 10 to 12 tonnes of well-decomposed cow dung or farmyard manure per acre into the soil. This organic manure improves the water holding capacity and soil structure. After plowing, level the field to prevent water from pooling in low spots during the monsoon. Depending on your irrigation setup, you can make ridges and furrows or create flat beds. Ridges are highly recommended because they help channel excess rainwater away during heavy downpours.

Propagation and slips selection

Citronella grass is propagated vegetatively using slips, which are small rooted shoots taken from mature clumps. Seeds are rarely used because they have low germination rates and do not produce uniform plants. Select healthy, high-yielding clumps that are about one to two years old as your source of slips. Cut the top leaves of these clumps back to a height of 20 to 25 cm from the ground. Gently lift the clumps using a spade, ensuring you do not damage the roots. Split the clumps by hand to separate the individual slips, keeping a small piece of the root and three to four stems on each slip. Remove any dead stems or decayed roots before planting. Plant the slips upright in the soil at a depth of 5 to 8 cm, pressing the soil firmly around the base to eliminate air pockets. The best time for planting is during the monsoon season, from June to August, when the weather is warm and wet.

Plant spacing guidelines

Correct spacing between the plants is necessary to allow each clump to expand without crowding. For standard soils, a spacing of 60 cm by 60 cm is recommended, which accommodates about 11000 slips per acre. In highly fertile soils where the grass grows vigorously, increase the spacing to 90 cm between rows and 60 cm between plants, which requires about 7400 slips per acre. Proper spacing ensures the plants get enough sunlight and simplifies manual weeding and harvesting operations later.

Irrigation water requirements

The water needs of citronella grass vary with the season and soil type. During the rainy season, the crop does not need extra watering unless there is a prolonged dry spell. In the dry summer months, irrigate the field once every 10 to 12 days to keep the soil moist and support continuous leaf growth. Drip irrigation is highly effective for this crop because it saves water, applies moisture directly to the root zone, and reduces weed growth between the rows. If you are using flood irrigation, ensure the channels are well-maintained and that excess water can drain out quickly. Over-watering can lead to yellowing of the leaves and fungal infections in the root zone.

Nutrient and fertilizer management

Citronella is a heavy leaf-producing grass, which means it extracts large amounts of nutrients from the soil. To sustain high yields, a balanced fertilizer application is necessary. An indicative recommendation for one acre of citronella is 50 kg of Nitrogen, 20 kg of Phosphorus, and 20 kg of Potassium per year. Apply the full dose of Phosphorus and Potassium, along with one-fourth of the Nitrogen, at the time of planting or immediately after land preparation. The remaining Nitrogen should be applied in three to four equal split doses after each harvest cut. This helps the plants recover quickly and produce a fresh flush of leaves. Always consult your local Krishi Vigyan Kendra, or KVK, to adjust these fertilizer quantities based on your specific soil health report.

Crop care and pest control

Keep the field free of weeds during the first three to four months after planting. The young slips grow slowly at first, and weeds can easily crowd them out, competing for nutrients and water. Perform the first manual weeding about 30 to 45 days after planting, followed by a second weeding after another 30 days. You can also use a light inter-cultivator or power tiller between the rows to clear weeds and loosen the soil. Once the citronella clumps grow large and cover the soil, they naturally shade out most weeds, reducing the need for manual labor. After each harvest, perform a light hoeing and earth up the soil around the base of the clumps to encourage new root growth and shoot development.

Citronella grass is relatively hardy, but it can occasionally face pests and diseases. The most common pest is the stem borer, which tunnels into the stems and causes the central leaf to dry up, a condition known as dead heart. Regular monitoring of the field is necessary to catch infestations early. You can manage this by removing and destroying the affected shoots. The crop can also be affected by leaf blight, a fungal disease that causes brown spots on the leaves, reducing the quality of the foliage. To prevent this, avoid waterlogging and maintain proper plant spacing for air circulation. If you observe severe symptoms, consult agricultural experts or your local KVK for safe biological or chemical control recommendations.

Multi cut harvesting cycle

The first harvest is usually ready about six months after planting, when the clumps have grown large and the leaves contain optimal oil levels. Subsequent harvests can be taken every 90 to 100 days, allowing for three to four cuts per year depending on the climate and water availability. Use sharp sickles to cut the grass manually at a height of 15 to 20 cm from the ground. Avoid cutting too close to the ground, as this can damage the growth buds at the base of the stems and delay the recovery of the plant. Do not harvest the grass during heavy rains, as wet leaves are difficult to process and the quality of the distilled oil can degrade. Sunny days are ideal for harvesting.

Managing the plantation over its entire four to five year life cycle requires regular rejuvenation practices. After the fourth year, the central portion of the citronella clump may become woody and produce fewer leaves. During this phase, you must perform deep earthing up and ensure proper fertilizer application to stimulate lateral root development. In the final year of the crop, plan for land rotation. Rotating citronella with leguminous crops like cowpea or green gram helps restore nitrogen levels in the soil, ensuring that the field remains fertile for future plantings.

Steam distillation and oil yield

The harvested grass must be wilted in a shaded area for 24 to 36 hours before it is loaded into the distillation unit. Wilting is a crucial step because it reduces the moisture content of the leaves, allowing you to pack more grass into the distillation tank and save fuel. Do not expose the harvested grass to direct sunlight, as the heat will cause the essential oil to evaporate from the leaves, reducing your total yield. The wilted grass is packed tightly into a stainless steel steam distillation unit. Steam generated from a boiler is passed through the grass, carrying the volatile oil vapors into a condenser. The cooled steam condenses into a mixture of water and oil, which flows into a separator tank. Since citronella oil is lighter than water, it floats to the top and can be carefully skimmed off.

The essential oil content in citronella grass ranges from 0.8% to 1.2% of the fresh biomass. In the first year, an acre of cultivation can yield about 80 to 100 kg of oil. As the clumps grow larger and more mature, the oil yield can increase to 120 to 150 kg per acre in the second and third years. The quality of the oil depends on the proportion of citronellal and geraniol. The distilled oil should have a pale yellow to light brown color and a clear appearance. Store the oil in air-tight container drums made of food-grade aluminum or galvanized iron. Keep these drums in a cool, dry place away from direct sunlight. Even small amounts of water or exposure to air can oxidize the oil, lowering its commercial value.

Buyback contracts and market risks

Before you invest money in citronella farming, you must understand the marketing risks. Raw citronella grass has no local market, and you cannot sell it like wheat or paddy. Your returns depend entirely on selling the distilled oil to herbal processing firms, perfume manufacturers, or pharmaceutical companies. It is highly recommended to secure a written buyback contract with a reputable buyer before you start. Many private companies and seed sellers offer guaranteed buyback schemes where they sell slips at very high prices and promise to buy back your oil at attractive rates. Many of these schemes are scams. The sellers often disappear after selling the planting material, or they reject your oil later by claiming it does not meet quality standards. Always verify the physical address, registration details, and reputation of any company offering these contracts.

Estimated setup cost and returns

The initial cost to establish one acre of citronella grass includes land preparation, purchasing slips, planting labor, and setting up irrigation. This cost typically ranges between 35000 and 45000 Rupees. If you do not own a steam distillation plant, you will also need to budget for hiring processing units, which can cost 150 to 250 Rupees per hour of operation. The price of citronella oil fluctuates based on market demand and import trends, usually ranging from 900 to 1300 Rupees per kg. With a stable buyer contract, an acre of citronella can yield a gross income of 90000 to 150000 Rupees per year. After deducting annual maintenance and distillation costs, a net profit of 60000 to 90000 Rupees per acre is possible. These financial figures are indicative and vary based on your local conditions and management practices.

Frequently asked questions

What is Java citronella grass?

Java citronella grass is a perennial aromatic grass grown commercially for its essential oil, which is widely used in insect repellents, perfumes, and cosmetics.

How is citronella grass propagated?

Citronella grass is propagated vegetatively using slips, which are small shoots with roots separated from healthy, mature clumps.

What is the recommended spacing for planting citronella slips?

The recommended spacing is 60 cm by 60 cm for average soils, or 90 cm by 60 cm for very fertile soils, to allow clumps room to grow.

How long does a citronella plantation last?

A single commercial citronella plantation remains productive and yields leaves for about four to five years before requiring replanting.

How much rainfall does citronella grass require?

Citronella grass thrives in areas with 1500 to 2500 mm of annual rainfall, though it grows well with regular irrigation in drier zones.

When is the best time to plant citronella slips in India?

The best time to plant slips is during the monsoon months, from June to August, when soil moisture is high and temperatures are warm.

What is the typical harvesting frequency for citronella grass?

The first harvest is taken about six months after planting, and subsequent cuts are taken every 90 to 100 days, yielding 3 to 4 cuts annually.

Why must citronella grass be wilted before steam distillation?

Wilting grass in the shade for 24 to 36 hours reduces the moisture content, saving fuel during distillation and allowing more grass to fit in the tank.

What is the average essential oil yield of citronella per acre?

An acre yields about 80 to 100 kg of oil in the first year, which can increase to 120 to 150 kg per acre in subsequent years as clumps mature.

Does cattle or wild wildlife damage citronella grass?

No, cattle, wild boars, and monkeys do not feed on or damage citronella grass due to its sharp leaf texture and strong citrus fragrance.

What is the ideal soil pH for growing citronella grass?

The crop grows best in soils with a pH of 6.0 to 7.5, preferring well-drained sandy loam soils and failing in waterlogged clay soils.

How much nitrogen fertilizer does citronella grass require?

An acre of citronella generally requires around 50 kg of Nitrogen per year, applied in split doses after each harvest cut to promote leaf regrowth.

Are guaranteed buyback contracts offered by seed sellers safe?

No, many guaranteed buyback schemes offered by private seed sellers are scams. Always verify the buyer credentials and secure contracts with established processing firms.

How should distilled citronella oil be stored?

Citronella oil should be stored in air-tight container drums made of food-grade aluminum or galvanized iron in a cool, dry place.

Can I get a direct agricultural loan from NABARD for citronella farming?

No, NABARD does not provide direct loans to individual farmers. It refinances commercial, cooperative, and regional rural banks that issue agricultural loans.