Onion Farming in Kenya: A Beginner’s Guide

Onion farming is a growing industry in Kenya. The demand for onions is high, and the prices are relatively stable. This makes onion farming a good investment for farmers.

Onions are a staple crop in Kenya and are used in a variety of dishes. They are also a good source of vitamins and minerals. The ideal climate for onion farming in Kenya is hot and dry. The best soil for onion farming is loamy soil that is well-drained.

If you are interested in starting an onion farming business in Kenya, there are a few things you need to do. First, you need to choose a suitable location for your farm. Second, you need to get the necessary permits and licenses. Third, you need to purchase the necessary seeds, seedlings, and other inputs. Finally, you need to develop a marketing plan.

In this article, we’ll explore the art and science of cultivating onions in Kenya, from selecting the right varieties to mastering the cultivation techniques that thrive in its unique climate. Whether you’re a seasoned farmer or just curious about the journey from seed to bulb, join us as we uncover the secrets behind successful onion farming in this vibrant East African nation.

What is onion farming?

Onion farming is the practice of cultivating and growing onions as a crop for various purposes. Onions are edible bulb vegetables that are widely used in cooking to add flavor to a variety of dishes. They come in different sizes, colors, and flavors, making them a versatile ingredient in cuisines around the world.

In onion farming, the process typically involves selecting suitable onion varieties, preparing the soil, planting the onion seeds or sets (small bulbs), providing appropriate care and maintenance during their growth, and finally harvesting the mature bulbs. This agricultural endeavor requires knowledge of planting techniques, soil conditions, watering schedules, pest and disease management, and harvesting methods to ensure a successful onion crop yield.

Why is onion farming important in Kenya?

Onion farming holds significant importance in Kenya for several reasons. Firstly, onions are a staple in the Kenyan diet and a crucial ingredient in many traditional dishes. Their strong flavor and nutritional value make them an essential component of local cuisine, contributing to the flavor profile and dietary needs of the population.

Secondly, onion farming provides livelihoods for many Kenyan farmers, both small-scale and commercial. It offers a source of income and employment opportunities, particularly in rural areas where agriculture is a primary economic activity. By engaging in onion farming, individuals and communities can generate income, improve their living standards, and contribute to the overall economy of the country.

Furthermore, onion farming plays a role in food security. Kenya’s ability to produce its own onions reduces its reliance on imports, ensuring a steady supply of this important vegetable and stabilizing prices in local markets. This, in turn, benefits consumers by making onions more accessible and affordable.

Lastly, onion farming contributes to agricultural diversity. By cultivating onions alongside other crops, farmers can enhance the variety of products they offer and reduce the risks associated with relying solely on one type of crop. This diversification can lead to better resilience against crop failures and market fluctuations.

In essence, onion farming in Kenya goes beyond being a simple agricultural practice; it intersects with culture, livelihoods, food security, and economic stability, making it an integral part of the country’s agricultural landscape.

The different types of onions grown in Kenya

In Kenya, several types of onions are grown, each with its unique characteristics and uses. These onion varieties cater to diverse culinary preferences and market demands.

Here are some of the different types of onions commonly cultivated in Kenya:

  1. Red Creole Onions: These onions are known for their vibrant red or purple skin and mild flavor. They are often used raw in salads and sandwiches due to their sweet taste and appealing color.
  2. Bulb Onions: Bulb onions are the most common type grown in Kenya. They have a classic round shape and come in different sizes, from small to large. They have a pungent flavor and are versatile for both cooking and raw consumption.
  3. Spring Onions (Scallions): Spring onions are characterized by their long green leaves and small white bulbs. They have a milder taste compared to bulb onions and are often used as a garnish or ingredient in soups and stir-fries.
  4. Red Shallots: These onions have a more elongated shape and a reddish-brown skin. They offer a sweeter and milder flavor compared to traditional bulb onions. Red shallots are commonly used in various cuisines to add a delicate onion taste.
  5. Yellow Sweet Onions: These onions have a golden-yellow skin and a mild, slightly sweet flavor. They are commonly used in cooking and are a popular choice for caramelizing due to their natural sweetness.
  6. White Onions: White onions have a white skin and a sharp, pungent flavor. They are often used in Mexican cuisine and are great for salsas and dishes where a strong onion taste is desired.
  7. Pearl Onions: These are small, round onions that are usually pickled or used in stews and soups. They add a burst of flavor and are also known as “baby onions.”
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Each type of onion has its own culinary uses and characteristics, and Kenyan farmers often select varieties based on factors such as taste, market demand, and adaptability to local growing conditions. This diversity of onion types contributes to the richness of Kenyan cuisine and supports various culinary traditions.

How profitable is onion farming in Kenya

Onion farming is a profitable business in Kenya. The demand for onions is high, and the prices are relatively stable. This makes onion farming a good investment for farmers.

According to a study by the Kenya National Bureau of Statistics, the average price of onions in Kenya in 2022 was Ksh 20 per kilogram. This means that a farmer with one acre of land planted with onions could earn around Ksh 200,000 in a year.

The profitability of onion farming in Kenya can vary depending on a number of factors, such as the variety of onion grown, the location of the farm, and the quality of the produce. However, overall, onion farming is a viable business opportunity for farmers in Kenya.

Here are some key considerations that influence the profitability of onion farming:

  1. Market Demand: The demand for onions in local and export markets significantly affects profitability. High demand can lead to competitive prices, while oversupply can result in lower prices. Understanding market trends and consumer preferences is crucial for timing planting and harvesting.
  2. Yield: The amount of onions harvested per unit area is a critical factor. Proper cultivation practices, soil preparation, irrigation, and pest management can contribute to higher yields, ultimately impacting profitability.
  3. Input Costs: The cost of seeds, fertilizers, pesticides, labor, and other inputs influences profitability. Efficient management of inputs and cost-effective practices can help maximize returns.
  4. Climate and Soil Conditions: Onions require specific growing conditions. Soil quality, water availability, and climate can impact crop growth. Proper irrigation and soil preparation can mitigate risks associated with unfavorable conditions.
  5. Pest and Disease Management: Onions can be susceptible to pests and diseases. Effective management strategies can prevent yield losses and reduce the need for costly treatments.
  6. Harvesting and Post-Harvest Handling: Efficient harvesting techniques and proper post-harvest handling can minimize losses due to spoilage and ensure a higher percentage of marketable onions.
  7. Value Addition: Some farmers explore value addition by processing onions into products like pickles or dehydrated onion flakes. This can create additional revenue streams.
  8. Market Access: Access to reliable markets and distribution networks is crucial. Farmers who can connect directly with consumers or buyers may achieve better prices.
  9. Economic Factors: Exchange rates, inflation, and overall economic stability can impact the profitability of onion farming, particularly if input costs increase or market prices fluctuate.

It’s important for onion farmers in Kenya to conduct thorough research, seek advice from agricultural experts, and implement best practices to enhance their chances of profitability. Successful onion farming requires careful planning, continuous learning, and adapting to changing market conditions.

Climate and soil requirements

Onions have specific climate and soil requirements to thrive. Understanding these factors is essential for successful onion farming in Kenya. Here’s a breakdown of the ideal climate and soil conditions for cultivating onions:

Climate Requirements:

Onions are considered cool-season crops and are best suited for temperate and subtropical climates. In Kenya, onion farming is generally done during the dry seasons, as excessive rainfall can lead to disease and poor bulb development. Here are some key climate considerations:

  1. Temperature: Onions prefer moderate temperatures between 15°C and 25°C (59°F to 77°F). Cooler temperatures are favorable during bulb formation, while warmer temperatures are suitable for foliage growth.
  2. Day Length: Onions are categorized into short-day, intermediate-day, and long-day varieties based on their sensitivity to day length. In Kenya, short-day varieties are commonly grown as they match the natural day length variations.
  3. Rainfall: Onions require a well-defined dry season with limited rainfall during their growth cycle. Excessive moisture can lead to diseases and affect bulb development. Adequate irrigation is crucial in areas with inadequate rainfall.

Soil Requirements:

Onions thrive in well-drained soils with specific nutrient levels. Proper soil preparation is essential for healthy onion growth. Here are the key soil requirements:

  1. Texture: Onions prefer sandy loam to loamy soils that are well-drained. Heavy clay soils can lead to poor bulb development and increased disease susceptibility.
  2. pH Level: The ideal soil pH for onions ranges from 5.5 to 6.5. Slightly acidic to neutral soils provide optimal nutrient availability for the plants.
  3. Fertility: Onions require sufficient nutrients, especially nitrogen, phosphorus, and potassium. Organic matter should also be present in the soil. Conduct soil tests to determine nutrient levels and make informed fertilizer applications.
  4. Water Holding Capacity: The soil should have adequate water-holding capacity without becoming waterlogged. Proper irrigation practices are crucial, as onions are sensitive to water stress and excess moisture.
  5. Soil Preparation: Thoroughly prepare the soil by removing weeds, breaking up clods, and incorporating organic matter. Raised beds can improve drainage and prevent waterlogging.
  6. Crop Rotation: Avoid planting onions in the same area year after year to prevent soil-borne diseases and pests from building up in the soil.
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How to plant onions – A step-by-step guide

Planting onions requires careful attention to detail to ensure successful germination and healthy growth. Here’s a step-by-step guide on how to plant onions:

  1. Choose the Right Onion Variety: Select onion varieties that are well-suited for your climate and growing conditions. In Kenya, short-day onion varieties are commonly recommended due to the natural day length variations.
  2. Prepare the Soil: Prepare the planting area by loosening the soil and removing weeds. Work in compost or well-rotted manure to improve soil structure and fertility.
  3. Timing: Plant onions during the dry season when rainfall is minimal. This usually falls during the cooler months. Planting at the right time helps prevent disease and encourages proper bulb development.
  4. Seed Selection and Preparation: Onions can be grown from seeds or sets (small bulbs). If using seeds, start them indoors a few weeks before the intended planting date. Transplant the seedlings when they have developed a few leaves.
  5. Planting Depth and Spacing: Plant onion sets or seedlings about 2 to 4 inches (5 to 10 cm) apart in rows. The depth at which you plant depends on the size of the onion: smaller sets or transplants can be planted slightly shallower, while larger ones can be planted a bit deeper.
  6. Row Spacing: Space rows about 12 to 18 inches (30 to 45 cm) apart. Proper spacing allows for air circulation and reduces the risk of diseases.
  7. Planting Technique: Gently press each onion set or transplant into the soil, making sure the roots are straight and the bulb is just below the soil surface. Space them evenly within the row.
  8. Watering: Water the newly planted sets or seedlings immediately after planting. Provide consistent moisture, but avoid overwatering to prevent waterlogging.
  9. Mulching: Apply a layer of organic mulch, such as straw or chopped leaves, around the onion plants. Mulching helps conserve soil moisture, suppress weeds, and maintain consistent soil temperatures.
  10. Fertilization: Onions have specific nutrient requirements. Apply a balanced fertilizer according to soil test recommendations or use a fertilizer with a ratio like 10-10-10.
  11. Weed and Pest Control: Regularly inspect the onion bed for weeds and remove them promptly. Implement pest management practices to prevent common onion pests.
  12. Harvesting: Harvest onions when the foliage begins to yellow and topple over. Gently loosen the soil around the bulbs, and then lift them out. Allow the bulbs to cure in a dry, well-ventilated area for a week or two before storing.

By following these planting guidelines and providing proper care throughout the growing season, you can increase the likelihood of a successful onion harvest in Kenya.

Harvesting and storing onions

Harvesting and storing onions properly is essential to preserve their quality and extend their shelf life. Here’s how to harvest and store onions effectively:

Harvesting Onions:

  1. Check Maturity: Onions are ready for harvest when their tops start to turn yellow and fall over naturally. The necks should be well-closed and not soft.
  2. Choose a Dry Day: Plan to harvest onions on a dry day to minimize the risk of introducing excess moisture during the harvesting process.
  3. Loosen Soil: Gently loosen the soil around the onion bulbs using a garden fork or your hands. Be careful not to damage the bulbs.
  4. Lift Carefully: Lift the onions out of the soil by grasping the tops near the base and gently pulling them out. Avoid yanking or twisting, as this can damage the bulbs.
  5. Curing: After harvesting, lay the onions in a single layer in a dry, well-ventilated area with good air circulation. Allow the bulbs to cure for about 1 to 2 weeks. Curing helps the outer layers dry and the necks to seal, which enhances storage quality.

Storing Onions:

  1. Trimming: Once the onions are cured, trim the tops to about 1 to 2 inches above the bulbs. Remove any loose or damaged outer layers.
  2. Sorting: Sort the onions based on size and condition. Use any damaged or smaller onions first, as they have a shorter shelf life.
  3. Choose a Storage Location: Onions should be stored in a cool, dry, and well-ventilated area. A dark place, such as a basement or pantry, is ideal. Avoid areas with high humidity, as this can cause sprouting and decay.
  4. Storage Containers: Store onions in mesh bags, baskets, or wooden crates that allow air circulation. Avoid plastic bags, as they can trap moisture and lead to rot.
  5. Avoid Moisture: Keep onions away from sources of moisture, including sinks, refrigerators, and areas prone to condensation.
  6. Separation: Store onions separately from potatoes and other vegetables, as they can release moisture and gases that may cause spoilage.
  7. Regular Check: Periodically check stored onions for signs of decay or sprouting. Remove any spoiled onions to prevent them from affecting the others.
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Long-Term Storage:

For long-term storage, consider the following techniques:

  • Braiding: If you have many onions, you can braid their tops together and hang them in a cool, dry place.
  • Layering: Layer onions with straw or sawdust in a container. Make sure each layer is separated by a breathable material.
  • Root Cellar: If available, a root cellar provides an ideal environment for long-term onion storage due to its cool and consistent conditions.

By harvesting at the right time, curing properly, and storing onions in the appropriate conditions, you can enjoy a bountiful supply of fresh onions for an extended period.

Marketing your onions

Marketing your onions is essential to getting a good price for your produce. There are a number of ways to market your onions, including:

  • Direct sales: You can sell your onions directly to consumers at farmers markets, roadside stands, or through community-supported agriculture (CSA) programs.
  • Wholesale sales: You can sell your onions to wholesalers, who will then sell them to retailers.
  • Export sales: You can export your onions to other countries.
  • Online sales: You can sell your onions online through your own website or through a third-party marketplace.

No matter which marketing method you choose, it is important to make sure that your onions are of high quality. You should also be prepared to negotiate prices with buyers.

Challenges of onion farming in Kenya

Onion farming in Kenya, like any agricultural endeavor, comes with its own set of challenges. Understanding these challenges is important for farmers to develop strategies to overcome them. Here are some common challenges of onion farming in Kenya:

  1. Climate and Seasonality: Unpredictable weather patterns, including irregular rainfall and extended dry spells, can impact onion growth and yield. Onions are sensitive to moisture levels and require specific temperature conditions for proper development.
  2. Pests and Diseases: Onions can be vulnerable to pests like thrips, aphids, onion maggots, and diseases such as bacterial and fungal infections. Managing these pests and diseases requires effective and timely interventions.
  3. Soil Management: Maintaining proper soil health and fertility is essential for onion cultivation. Soil erosion, soil-borne diseases, and nutrient imbalances can affect crop quality and yield.
  4. Water Management: Inconsistent or inadequate irrigation can lead to poor bulb formation, increased susceptibility to diseases, and reduced yields. Proper water management practices are critical, especially in regions with limited water resources.
  5. Labor Intensity: Onion farming involves various labor-intensive tasks, such as planting, weeding, harvesting, and post-harvest handling. Labor availability and costs can affect overall profitability.
  6. Market Fluctuations: Onion prices can be subject to market fluctuations due to factors like oversupply, changing consumer preferences, and external market conditions. Farmers may face challenges in obtaining fair and stable prices for their produce.
  7. Storage and Post-Harvest Losses: Improper post-harvest handling and storage can lead to spoilage, sprouting, or rotting of onions. Proper curing, packaging, and storage techniques are necessary to minimize losses.
  8. Quality Control: Maintaining consistent quality in terms of size, appearance, and flavor is crucial for market acceptance. Achieving uniformity in onion bulbs can be challenging, impacting marketability.
  9. Access to Finance: Some farmers may struggle to access financing for purchasing quality inputs, equipment, and implementing modern farming techniques that could enhance yield and quality.
  10. Limited Technical Knowledge: Lack of access to updated farming practices and information can hinder farmers’ ability to address challenges effectively and adopt innovative techniques.
  11. Transportation and Distribution: Getting onions from the farm to the market can be challenging, especially in rural areas with limited infrastructure. Proper transportation and distribution networks are essential for timely delivery to consumers.

Despite these challenges, many Kenyan farmers have successfully overcome them through education, training, improved agricultural practices, and support from government initiatives and non-governmental organizations. Addressing these challenges requires a combination of knowledge, resources, and collaboration within the agricultural community.


In conclusion, onion farming in Kenya is a dynamic and essential agricultural activity that contributes to food security, economic development, and local cuisine. Through this article, we’ve explored the intricate world of onion cultivation, from selecting the right varieties to understanding climate and soil requirements. We’ve delved into the various challenges that farmers might face, from unpredictable weather patterns to market fluctuations.

By implementing proper planting techniques, effective pest management strategies, and careful post-harvest handling, farmers can navigate challenges and achieve successful onion yields.

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