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From the moment a tiny onion seed is sown into fertile soil, it begins a remarkable journey shaped by science, patience, and market insight. This path from careful seed selection and nurturing in the field, to harvesting, curing, and grading demands both agricultural skill and business acumen. Farmers increasingly turn to hybrid and high-quality open-pollinated seeds to ensure resilience, uniformity, and higher yields, while sustainable practices and controlled-environment farming boost consistency. Once harvested, onions undergo meticulous sorting and packaging to meet diverse market standards, from local stalls to international export hubs. In today’s competitive Agri-economy, understanding the full seed-to-market chain is not just about growing onions, it’s about cultivating value, reducing post-harvest losses, and aligning with consumer demand for freshness, flavor, and traceability. This holistic approach transforms a humble seed into a profitable, market-ready product that feeds communities and sustains livelihoods. Are you in need of in-depth knowledge on onion and garlic production? If yes, we are a call away. Contact us for: Onion seedlings, Garlic seedlings, Germinated garlic cloves, Farm planning services, Soil testing, training on onion and garlic growing, Drip irrigation installation and maintenance, Agronomic support, Onion and Garlic value pack and Farm management. For free consultation, placing orders or booking a visit with an agronomist, please contact us via Call or what’s app +254703982228, Email: Info@oniondoctor.co.ke. You can also check out our social media handles for daily updates on TikTok: https://www.tiktok.com/@oniondoctorke?_t=ZM-8wmsTu0qumO&_r=1 Instagram: https://www.instagram.com/oniondoctorke?igsh=MTVoaHF3aWUydTJzaQ==Facebook:https://www.facebook.com/share/16SwgYn2dG/ Youtube:https://youtube.com/@oniondoctorke?si=u5Jnd-r0qU9UDYqL and Twitter: https://x.com/OnionDoctorKe?t=FR3JXlS_oN1vjjUgAtfyzg&s=09. Seedling Propagation and Nursery Management in Onion Farming Once your seeds have germinated, the real work begins. Managing your onion nursery requires regular attention to watering, weeding, and pest control. The seedlings should be watered regularly, preferably in the morning or late afternoon, to avoid the scorching midday sun, which can cause rapid evaporation. Weeds can quickly overrun a nursery, competing with onion seedlings for nutrients and sunlight. Regular weeding is essential, but it should be done carefully to avoid disturbing the delicate seedlings. Hand-weeding is usually the best method during the early stages. Pest and disease management is another critical aspect of nursery care. Common pests in onion nurseries include thrips and cutworms, while diseases such as damping-off, downy mildew, and purple blotch can affect seedlings. Regular inspection of the nursery for any signs of pests or disease is essential. If detected, appropriate measures should be taken, such as using organic or chemical pesticides, depending on the severity of the infestation and the stage of seedling development. Transplanting and Fertilizer Application in Onion Farming in Kenya In onion farming, successful transplanting and proper fertilizer application are key steps that determine both yield and bulb quality. Transplanting is usually done when seedlings are 6–8 weeks old, with 3–4 true leaves and a pencil-thick stem, ensuring they are strong enough to withstand field conditions. Before transplanting, seedlings should be hardened by gradually reducing water and exposing them to outdoor conditions for about a week, which helps them adapt and reduces transplant shock. The field should be well-prepared with fine tilth and proper drainage to avoid waterlogging, which can cause bulb rot. At planting, a basal application of well-decomposed manure or compost enriches the soil with organic matter, while a balanced NPK fertilizer often in the ratio of 20:20:20 or as recommended by a soil test provides essential nutrients for early growth. After establishment, split applications of nitrogen-rich fertilizer, such as CAN or urea, are applied at intervals to promote healthy leaf development, which directly influences bulb size. Care should be taken to avoid over-fertilization, as excessive nitrogen can delay maturity and reduce storage quality. Combining timely transplanting with a well-planned fertilizer regime ensures onions grow vigorously, mature uniformly, and achieve maximum market value. Proper Curing To Boost Shelf Life And Market Value Curing is the silent hero of onion farming the crucial post-harvest process that transforms freshly pulled bulbs into long-lasting, market-ready produce. By allowing onions to dry in warm, well-ventilated conditions until their outer skins turn papery and necks seal completely, farmers can extend shelf life for months, reduce losses from rot and sprouting, and preserve that firm, flavorful crunch buyers love. In the marketplace, well-cured onions not only fetch higher prices but also open doors to distant markets, giving farmers a competitive edge and steady income even in off-season months. For growers aiming to turn their harvest into lasting profit, mastering the art of curing is as important as the planting itself. At Onion Doctor, we believe every bulb counts, and so does every farmer’s success story. From providing high-quality seedlings and precise soil testing to connecting you with ready markets and offering hands-on agronomy support, we walk with you every step of the way. Whether you grow onions or garlic, our mission is to help you achieve bigger harvests, better quality, and brighter profits. Let’s grow together, because your farm’s potential is just the beginning.

Are you in need of in-depth knowledge on onion and garlic production? If yes, we are a call away. Contact us for: Onion seedlings, Garlic seedlings, Germinated garlic cloves, Farm planning services, Soil testing, training on onion and garlic growing, Drip irrigation installation and maintenance, Agronomic support, Onion and Garlic value pack and Farm management. For free consultation, placing orders or booking a visit with an agronomist, please contact us via Call or what’s app +254703982228, Email: Info@oniondoctor.co.ke. You can also check out our social media handles for daily updates on TikTok: https://www.tiktok.com/@oniondoctorke?_t=ZM-8wmsTu0qumO&_r=1 Instagram: https://www.instagram.com/oniondoctorkeigsh=MTVoaHF3aWUydTJzaQ==Facebook:https://www.facebook.com/share/16SwgYn2dG/ Youtube:https://youtube.com/@oniondoctorke?si=u5Jnd-r0qU9UDYqL and Twitter:https://x.com/OnionDoctorKet=FR3JXlS_oN1vjjUgAtfyzg&s=09. Onion farming is more than just planting seeds and waiting for harvest, it’s an art that blends timing, soil care, and smart farming techniques to produce those big, healthy bulbs that fetch premium prices in the market. The secret lies in starting with the right variety for your climate, preparing nutrient-rich, well-drained soil, and ensuring consistent watering without waterlogging. Strategic spacing allows each plant enough room to grow, while timely weeding and pest control keep the crop healthy. Adding organic matter boosts bulb size and harvesting at the right maturity ensures longer shelf life and better market value. With these simple but powerful practices, farmers can turn their onion fields into a steady source of bigger yields and higher profits season after season. Planting Onion Seedlings Onion seedlings can be planted at any point from this size up so long as the soil is workable and not overly wet. I’ve reserved a beautifully bright spot for my onions, because more sun means bigger bulbs. If you’re buying ready-to-plant transplants or starts, then they will arrive as individual seedlings, so these will need to be planted at the same spacings as sets, so at least 10 cm apart, or use wider spacings to grow larger bulbs. With your seedlings planted, give them a good drink. If Winter is still dragging on where you are, it’s a good idea to cover these early plantings with row cover fabric to help them transition, at least for the first couple of weeks, until it’s a bit warmer. Watering and Feeding Onions With your onions planted, it’s now a waiting game. Plants will put on plenty of leafy growth but won’t start swelling those bulbs until days are long enough. Because onions have thin, strappy leaves they’re easily overpowered by weeds, so it’s essential to keep the soil around plants well-weeded. Another advantage of keeping the ground weed-free is improved airflow between plants. This, together with proper spacing , leaving enough space between plants or clusters or plants – should help to reduce the risk of disease. These are shallow-rooted plants, so be careful and hand-weed or manual weeding is recommended. Onions love to sunbathe but they also need moist soil, especially when the time comes to swell those bulbs, so water regularly in dry weather. Plentiful moisture means bigger bulbs, it’s as simple as that! If you have it, drip irrigation can help to keep the soil moist while the leaves remain dry, which helps to minimize potential disease problems. Drip irrigation helps to minimize water loss and also water the onions uniformly. If your soil isn’t especially rich there’s no harm in adding a relatively fast-acting nitrogen-rich organic fertilizer a month or two after planting – something like bloodmeal would be perfect for this, sprinkled around your onions then tickled into the soil with a hand fork. Bigger onion bulbs don’t just happen by chance, they’re the result of smart farming practices, precise timing, and a deep understanding of your crop’s needs. From selecting the right high-yield varieties to mastering soil nutrition and irrigation schedules, every step plays a role in boosting both size and market value. When you combine these techniques with proper post-harvest handling, you’re not just growing onions — you’re cultivating a profitable agribusiness that can thrive season after season. The secret? Treat each bulb like an investment, and it will reward you with both abundance and income.

Are you in need of in-depth knowledge on onion and garlic production? If yes, we are a call away. Contact us for: Onion seedlings, Garlic seedlings, Germinated garlic cloves, Farm planning services, Soil testing, training on onion and garlic growing, Drip irrigation installation and maintenance, Agronomic support, Onion and Garlic value pack and Farm management. For free consultation, placing orders or booking a visit with an agronomist, please contact us via Call or what’s app +254703982228, Email: Info@oniondoctor.co.ke. You can also check out our social media handles for daily updates on TikTok: https://www.tiktok.com/@oniondoctorke?_t=ZM-8wmsTu0qumO&_r=1 Instagram: https://www.instagram.com/oniondoctorkeigsh=MTVoaHF3aWUydTJzaQ==Facebook:https://www.facebook.com/share/16SwgYn2dG/ Youtube:https://youtube.com/@oniondoctorke?si=u5Jnd-r0qU9UDYqL and Twitter: https://x.com/OnionDoctorKe?t=FR3JXlS_oN1vjjUgAtfyzg&s=09. Soil Health Challenges in Onion Farming in Kenya. Onion farming in Kenya faces a silent but declining soil health. Many farmers struggle with depleted soils caused by continuous cultivation without proper replenishment of nutrients. Over-reliance on chemical fertilizers, while boosting short-term yields, often leads to soil acidification and reduced microbial activity, making the land less productive over time. Poor crop rotation practices also encourage the build-up of pests and diseases in the soil, further weakening plant growth. In some regions, erosion and waterlogging strip away or compact the topsoil, depriving onions of the loose, well-drained conditions they need to thrive. Additionally, climate change has intensified droughts and unpredictable rainfall, making it harder to maintain soil moisture and fertility. Addressing these challenges requires a shift toward sustainable practices such as organic composting, cover cropping, and integrated soil management ensuring that the very foundation of onion farming remains healthy, fertile, and resilient for future harvests. Healthy soil is the foundation of sustainable agriculture, but challenges like acidity and salinity threaten its productivity and long-term viability. Soil acidity occurs when the pH drops too low, often due to excessive rainfall leaching away essential nutrients or the prolonged use of acid-forming fertilizers. This condition can limit the availability of key nutrients such as phosphorus, calcium, and magnesium, while increasing toxic elements like aluminum, which can stunt root growth. On the other hand, soil salinity arises when soluble salts accumulate in the root zone, often as a result of poor drainage, over-irrigation, or the use of saline water sources. High salt concentrations disrupt plant water uptake, leading to reduced growth, lower yields, and in severe cases, plant death. Both acidity and salinity not only degrade soil structure and fertility but also make crops more vulnerable to pests, diseases, and climate stress. Addressing these issues requires integrated soil management practices such as liming acidic soils, improving drainage, adopting salt-tolerant crops, and using efficient irrigation methods to restore balance and ensure resilient, productive farmlands for the future. How can I improve soil fertility for my onion farm in Kenya? I am always looking for ways to improve the fertility of my soil. After all, healthy soil means healthy plants, which in turn leads to better yields and more profitable harvests. In this article, I will share some tips and techniques that I have found to be effective in improving soil fertility for my onion farm. One of the most important things to keep in mind when it comes to soil fertility is the importance of maintaining a good balance of nutrients. This includes not only the major nutrients such as nitrogen, phosphorus, and potassium but also the secondary and micronutrients that are essential for plant growth. Compost One way to achieve this balance is through the use of compost. Compost is made by breaking down organic matter, such as leaves and grass clippings, into a rich, nutrient-dense material that can be added to the soil. Composting is easy to do and can be done on a small scale using simple methods like pit or trench composting. Cover Crops Another way to improve soil fertility is through the use of cover crops. Cover crops are plants that are grown specifically to improve soil health. They can be used to add organic matter to the soil, to fix nitrogen, suppress weeds, and reduce erosion. Cover crops can be grown in between rows of onions, and then plowed under to add organic matter and nutrients back into the soil. Crop Rotation Another technique that I have found to be effective is crop rotation. Crop rotation helps to break pest and disease cycles, as well as to improve soil fertility by rotating different crops through different fields. This can be done by rotating onions with other crops such as maize, beans, or peas. By rotating different crops, the soil is replenished with different nutrients and the soil is less likely to become depleted. Organic Fertilizers Another way to improve soil fertility is through the use of organic fertilizers. Organic fertilizers are made from natural materials such as bone meal, blood meal, and fish emulsion. They are a great alternative to synthetic fertilizers and can be used to provide plants with the nutrients they need to grow healthy and strong. Beneficial Microorganisms Finally, another way to improve soil fertility is through the use of beneficial microorganisms. Beneficial microorganisms are microorganisms that help to improve soil fertility by breaking down organic matter and making nutrients available to plants. These microorganisms can be added to the soil through the use of compost teas or by using products such as mycorrhizal fungi. improving soil fertility is crucial for any onion farm. By using techniques such as composting, cover crops, crop rotation, organic fertilizers, and beneficial microorganisms, farmers can improve soil fertility and increase yields. These methods can be used in a sustainable and eco-friendly way, making them a great choice for farmers looking to improve their soil fertility In conclusion, while soil health challenges such as nutrient depletion, erosion, and declining organic matter can threaten both yields and long-term farm sustainability, they are far from insurmountable. With the right agronomical guidance, regular soil testing, and tailored nutrient management, farmers can restore vitality to their land and secure better harvests year after year. At Onion Doctor, we specialize in diagnosing soil problems, providing expert recommendations, and supporting you with practical, science-backed solutions. Let’s work together to turn your

Are you in need of in-depth knowledge on onion and garlic production? If yes, we are a call away. Contact us for: Onion seedlings, Garlic seedlings, Germinated garlic cloves, Farm planning services, Soil testing, training on onion and garlic growing, Drip irrigation installation and maintenance, Agronomic support, Onion and Garlic value pack and Farm management. For free consultation, placing orders or booking a visit with an agronomist, please contact us via Call or what’s app +254703982228, Email: Info@oniondoctor.co.ke. You can also check out our social media handles for daily updates on TikTok: https://www.tiktok.com/@oniondoctorke?_t=ZM-8wmsTu0qumO&_r=1 Instagram: https://www.instagram.com/oniondoctorke?igsh=MTVoaHF3aWUydTJzaQ==Facebook:https://www.facebook.com/share/16SwgYn2dG/ Youtube:https://youtube.com/@oniondoctorke?si=u5Jnd-r0qU9UDYqL and Twitter: https://x.com/OnionDoctorKe?t=FR3JXlS_oN1vjjUgAtfyzg&s=09. Welcome to the Onion Doctor’s Corner – where we peel back the layers of life’s toughest challenges to uncover fresh, practical solutions. Just like an onion, every problem has layers — some may bring tears, others may surprise you with hidden sweetness. Here, we explore real struggles, share heartfelt stories, and offer remedies that heal from the inside out. Whether you’re facing personal hurdles, health concerns, or everyday dilemmas, the Onion Doctor is here to guide you toward clarity, resilience, and a brighter tomorrow. Onion Diseases You May Encounter, and How to Deal with Them All plants are prone to various health issues. Then again, what life form isn’t? Onions are quite hardy but can also suffer from many different diseases and pathogens. Below are the most common ones you might encounter and ways to counteract and heal them. Damping-Off Disease This is an issue you may encounter when you start your seedlings. It’s common when onions are planted outdoors too early and are exposed to cold, damp conditions. You can’t fix this once it sets in, but you can try to prevent it from happening. Start your seeds in a soil-less starting medium, such as perlite or vermiculite and coconut coir. If you do start them in soil, make sure it’s a well-aerated potting mix. Avoid any soil that can be easily compacted, and only hydrate the seeds with warm water. Additionally, you can try treating the seeds with a fungicide before planting. You can either look for commercial fungicides that contain metalaxyl or mefexonam, or slosh your seeds around in some diluted apple cider vinegar before planting. Onion White Rot This fungal disease can lurk in your soil for up to 20 years! It’s devastating to all allium crops and is responsible for crop failures worldwide. You can identify it by the fluffy white fungal growth around the bulb bases and stalks, as well as wilted, yellow leaves. There’s no real treatment for this issue. Your only option is to destroy the crop, dig out the soil and treat it with hardcore fungicide and solarization, and avoid planting any alliums there for at least two decades. When you decide to try planting onions again, try to find rot-resistant varieties and soak the seeds in warm water before planting. Fusarium Basal Plate Rot This fungal disease manifests as yellowed, curled, necrotic leaves and brown, mushy bulbs. The fungus thrives in warm, damp conditions and doesn’t have a cure. Prevention is best, once again. Make sure to plant in well-draining soil and rotate the area with non-allium crops for at least 5 years between onion plantings. You can also try planting fusarium-resistant varieties if you can find them. Black Mold Although black mold can grow on onions during the maturation process, it appears more often when the onions are stored. The symptoms hold true to its name: you’ll see black splotches around the onion’s neck, and it’ll spread into blackened/brownish, watery flesh in the bulb’s center. Avoid storing your bulbs in damp, warm conditions to prevent this stuff from appearing. Downy Mildew You’ve undoubtedly seen this one on several species before. It sort of looks like the fuzzy coating on one’s tongue after a week-long bender. Powdery mildew is a fungal issue caused by the festive combination of wet foliage and cool temperatures. It also likes to hide in soil for long periods of time. You can treat both the soil and plants with organic fungicides and avoid the issue by watering at the soil level rather than overhead. Oh, and rotate crops regularly (noticing a trend?). Purple Blotch Pests Affecting Onion Farming in Kenya This fungal issue is quite self-explanatory, as it causes purple blotches to appear on your onions’ stems. It’s common in areas that get a lot of humidity and high rainfall. Control Method of Pest and Diseases in Onion Farming in Kenya 1. Use Integrated Pest Management (IPM) Integrated Pest Management (IPM) is a comprehensive approach to controlling pests and diseases. It involves using a combination of different methods, such as biological control, cultural control, and chemical control. By using IPM, you can reduce the need for chemical pesticides, which can be harmful to the environment. For example, one of the common pests that attack onions in Kenya is the thrips. To control thrips, you can use a combination of cultural and biological control methods, such as planting companion crops, using sticky traps, and releasing predators such as ladybugs or lacewings. Another example is the onion maggot. To control onion maggots, you can use cultural control methods such as crop rotation, and using physical barriers like row covers. 2. Use Chemical Pesticides Only as a Last Resort While chemical pesticides can be effective at controlling pests and diseases, they should be used as a last resort. This is because chemical pesticides can be harmful to the environment and can lead to the development of pesticide-resistant pests. When using chemical pesticides, be sure to follow the label instructions carefully and only use the minimum amount necessary. Also, consider alternative methods such as neem oil or other bio-pesticides. 3. Practice Good Farming Practices Good farming practices, such as proper irrigation, fertilization, and crop rotation, can also help to control pests and diseases. For example, by providing your onions with the right amount of water and nutrients, you can help to keep them healthy and strong, making them less susceptible to

Are you in need of in-depth knowledge on onion and garlic production? If yes, we are a call away. Contact us for: Onion seedlings, Garlic seedlings, Germinated garlic cloves, Farm planning services, Soil testing, training on onion and garlic growing, Drip irrigation installation and maintenance, Agronomic support, Onion and Garlic value pack and Farm management. For free consultation, placing orders or booking a visit with an agronomist, please contact us via Call or what’s app +254703982228, Email: Info@oniondoctor.co.ke. You can also check out our social media handles for daily updates on TikTok: https://www.tiktok.com/@oniondoctorke?_t=ZM-8wmsTu0qumO&_r=1 Instagram: https://www.instagram.com/oniondoctorke?igsh=MTVoaHF3aWUydTJzaQ==Facebook:https://www.facebook.com/share/16SwgYn2dG/ Youtube:https://youtube.com/@oniondoctorke?si=u5Jnd-r0qU9UDYqL and Twitter: https://x.com/OnionDoctorKe?t=FR3JXlS_oN1vjjUgAtfyzg&s=09. Onion farming in Kenya is transforming into a more profitable and sustainable venture, thanks to innovative solutions like drip irrigation from Onion Doctor. By delivering water directly to the roots, drip irrigation ensures every drop counts, reducing wastage and boosting yields even in dry seasons. Onion Doctor combines climate-smart farming techniques, high-quality drought-resistant seedlings, and expert guidance to help farmers achieve healthier bulbs, faster growth, and consistent market-ready harvests. Whether you’re a smallholder or a large-scale grower, this modern approach not only saves time and resources but also secures a brighter, more reliable future for your onion farming journey. Onion farming with drip irrigation has turned into a good agribusiness activity with a high rate of returns over minimal inputs. You may be wondering what the secret behind the success of farmers specializing in onion production. Drip irrigation saves you on production Cost and in the long run enhances large yield of onions. Why You Should Conduct Onion Farming with Drip Irrigation Bulb onions are accustomed to changing water needs in response to growth phases. So having a controllable irrigation system would be a win in ensuring the right water needs are achievable continuously. Keeping in mind that bulb onions grow in well-drained and proper water retentive soil, slow watering prevents slow growth. Setting Up a Drip Irrigation System To utilize water balance and high conservation rate, it is ideal to set up a drip irrigation system on your onion farms. You must have a layout and plan of a drip irrigation system that suits the soil and topography of your farm. Onion Farming with Drip Irrigation: Planning and Design A drip irrigation layout is designed to allow Surface or underground irrigation model, but for onions, a surface layout is best. What affects the plan of a drip irrigation is the size of the farm, bed and desired number of driplines. You can choose to work with 2-3 driplines on a bed or section of land. The bed spacing for onion farming with drip irrigation should be 1.5-2 M wide and 100 M long. The plan also includes where to source water, often best to use tank water raised on a high point. Sourcing water from a raised tank will enhance gravitational flow of water on the driplines to all parts of the farm. The most suitable dripline hole spacing for onions is 15 cm or 20 cm spacing, as they are planted closer. Pipe layout, connection and installation plan should be available to ensure proper installation of the drip irrigation system. Installation Of Drip Irrigation System Starts with an initial step in preparation of the onion farm ready for drip irrigation installation. Once you have planted the onion seedlings, start the process of installation. Construct a tank tower and set up a water tank. Pump Water to the tank from a nearby source. Make trenches for laying Mainline pipes, dig 2 ft deep along the spaces between planting beds. After the trenches are dug, lay the mainline and sub-mainline HDPE pipes. Connect the mainline connection with a backflow preventer, pressure regulator, filter and an adapter. Make the sub mainline to riser connection by drilling the sub mainline pipe, using rubber grommets and inserting PE Off-take connectors. Insert the start drip connector at the end of lateral pipe. Lay driplines on the planting beds and connect them to the start connection. Seal the dripline ends using end plugs. Open the water connection to test the system. Cover the trenches to secure the pipe connection onto the ground. Maintenance of a drip Irrigation System Drip irrigation system maintenance determines how effective it will operate and the duration that it can last. There are various tips for maintaining a drip irrigation system including regular checks of the key parts of the system. The maintenance strategies are: In case of leakages, damaged pipes, fittings or filters repairs need to be done instantly as delay may cause high water loss. Drip irrigation has become a game-changer for onion farming in Kenya, offering farmers a reliable, efficient, and sustainable way to boost yields while conserving resources. Unlike traditional methods such as furrow or overhead irrigation, drip systems deliver water directly to the root zone of each plant through a network of pipes and emitters, ensuring that onions receive consistent moisture without waterlogging the soil. This precision watering not only reduces water wastage but also minimizes weed growth, since only the crop lines are wetted. In Kenya’s diverse climatic conditions, where rainfall can be unpredictable and water scarcity is a growing concern, drip irrigation allows farmers to maintain steady production cycles and achieve higher quality bulbs. Onions, with their shallow root systems, benefit greatly from the controlled moisture levels, which promote uniform growth and reduce the risk of diseases like downy mildew and bulb rot. Additionally, drip systems can be integrated with fertigation—applying fertilizers through the irrigation lines—ensuring nutrients are delivered efficiently and directly to the plants While the initial setup cost may be higher than traditional methods, the long-term benefits in terms of increased yields, reduced labor, and improved crop quality make drip irrigation a worthwhile investment for both small-scale and commercial onion farmers. As more Kenyan farmers adopt this technology, it is helping transform onion farming into a more profitable, climate-resilient, and sustainable enterprise.

Welcome to Onion Doctor’s corner, where we dig deep into the secrets of growing healthy, high-yield onions in Kenya. Whether you’re a first-time farmer or a seasoned grower, mastering the art of proper planting and spacing is the foundation of a thriving onion crop. In this guide, we’ll walk you through the best practices tailored to Kenya’s climate and soils—ensuring your onions get the right start, grow uniformly, and reward you with bigger bulbs and better market prices. Let’s plant smart, space right, and watch your onion farm flourish! Are you in need of in-depth knowledge on onion and garlic production? If yes, we are a call away. Contact us for: Onion seedlings, Garlic seedlings, Germinated garlic cloves, Farm planning services, Soil testing, training on onion and garlic growing, Drip irrigation installation and maintenance, Agronomic support, Onion and Garlic value pack and Farm management. For free consultation, placing orders or booking a visit with an agronomist, please contact us via Call or what’s app +254703982228, Email: Info@oniondoctor.co.ke. You can also check out our social media handles for daily updates on TikTok: https://www.tiktok.com/@oniondoctorke?_t=ZM-8wmsTu0qumO&_r=1 Instagram: https://www.instagram.com/oniondoctorke?igsh=MTVoaHF3aWUydTJzaQ==Facebook:https://www.facebook.com/share/16SwgYn2dG/ Youtube:https://youtube.com/@oniondoctorke?si=u5Jnd-r0qU9UDYqL and Twitter: https://x.com/OnionDoctorKe?t=FR3JXlS_oN1vjjUgAtfyzg&s=09. When to Plant Onions How to Plant Onions Indoors Whether you’re planting seeds or sets, get a shallow tray and fill it with compost to the top. Trays with a small section for each bulb are ideal.  How to Plant Onions Outdoors Onion plants are heavy feeders and require constant nourishment to produce big bulbs. At planting time, add nitrogen fertilizer. Many organic gardeners will add an inch of compost to the bottom of each row before planting or dig a trench in the soil about 2 inches deep and 3 inches wide, and then fill the trench back in with about an inch of compost. Spacing Of Onion Seedlings During Planting In onion farming, proper spacing is more than just a planting guideline—it’s the secret to healthier crops, bigger bulbs, and higher profits. In Kenya’s diverse climatic zones, maintaining an ideal distance of 15–20 cm between plants and 30 cm between rows allows each onion enough room to access sunlight, nutrients, and water without competing with its neighbors. This spacing also improves air circulation, which helps reduce the risk of fungal diseases and pest infestations, especially during the humid months. Farmers who overcrowd their onions often end up with smaller bulbs and lower yields, while those who space correctly enjoy uniform growth and easier weeding, irrigation, and harvesting. Whether you’re planting during the long rains of March–May or the short rains of October–December, consistent spacing ensures your onions develop strong root systems and mature evenly, giving you a market-ready harvest that stands out for its size, quality, and shelf life. In short, spacing isn’t just about where you plant—it’s about setting your onions up for success from day one. In the end, the secret to a thriving onion farm in Kenya lies not only in selecting the right seed variety but also in mastering the art of spacing a detail that often separates average harvests from exceptional ones. Proper spacing is more than just a guideline; it is a deliberate strategy that ensures each onion plant has the freedom to develop strong roots, lush green leaves, and bulbs that reach their full size and flavor potential. When onions are planted too closely, they compete fiercely for water, nutrients, and sunlight, leading to stunted growth and reduced yields. But when given the right distance, they grow uniformly, resist pests and diseases more effectively, and produce bulbs that are easier to harvest and store. This careful arrangement also improves airflow between plants, reducing the risk of fungal infections, while making weeding and pest control more manageable. Whether you are tending a small backyard plot or managing a large-scale commercial farm, remember that every centimeter of space you allocate is an investment in healthier plants, higher yields, and better market prices. In onion farming, spacing is not just a step in the process, it is the heartbeat of a successful harvest, turning your hard work into a crop that truly pays off season after season.

If you’ve ever dreamed of turning a small piece of land into a thriving source of income, onion farming might just be your golden opportunity. Onions are not only a kitchen staple but also one of the most profitable crops you can grow — with steady demand all year round. You are welcome to onion doctor to guide you on how turn that piece small piece of land into profitable onion farming we have quality onion seedlings, onion oasis and value package, soil test , land planning, transplanting supervision, drip irrigation and installation, agronomic support and consultation about onion and garlic growing. We are located in Birika, along Kiserian -Isinya road in Kajiado County. 50 percent of the red onions in Kenya are imported from Tanzania, as indicated by Food and Agriculture Organisation’s (FAO) 2014 report. Kenyan Farmers have been doing their best to address the demand and close the gap, but there is still more supply to be achieved. This makes the Red Bulb Onion a very attractive commercial investment for the Kenyan market at the moment, since local production is not enough. Major types of onions farmed in Kenya are bulb onions and spring onions. The best areas suited for farming being Karatina, Oloitoktok, Naivasha, Kieni, Emali and Mai Mahiu. Bulb onions take 3 to 4 months to reach maturity. Short rains are great for bulb onions since they can be harvested between January and February. Local farmers are able to benefit during this time period, since there is low supply of onions from Tanzania at this time of the year. After the long rains of March, the price of these onions hike and farmers who harvest after these period make good profit margins. Our recent market analysis shows red onion prices in Mombasa are going at Ksh 60 per kg bag while the highest prices are in Eldoret, at Ksh 70per kg bag. Heavy rains experienced in the months of May and June in these areas have contributed to the price hikes. Spring onions are easy to plant. You can even plant them at your kitchen garden. They are commonly used in vegetable salads or as seasoning in soups. Some of the health benefits of spring onions include lower blood sugar and decreasing blood pressure and cholesterol levels. Of the two types, bulb onions are more popular than the spring ones due to their long shelf life and sweet taste. Currently, there are two different varieties of bulb onions in the market. There is the small, thin and firmly layered onion that has a strong pungent smell from Tanzania. The second one is the big loosely held variety that is grown locally, in Kenya. Conditions for Onion Farming Onions perform well in well drained, fertile, sandy loam, non-compacted soils. The ideal pH is 5.8 to 6.8. Onion farming is a worthy venture since it’s possible to grow onions throughout the year via irrigation. Soil test with accredited laboratories is advised. The ideal temperatures onions need to grow are between 13 – 35 degrees centigrade. This means that onions can grow in most parts of Kenya. However, to maximize production in areas such as Ukambani and some parts in the Coastal area, one needs to invest in a greenhouse and drip irrigation. This is because greenhouses will optimize the temperatures since these areas are hot and irrigation will provide the much needed water. Onions are a cool season crop. Most areas in Ukambani and the Coastal region are extremely dry. In terms of requirements, apart from land that is an obvious fact, other requirements are DAP Fertilizer and seedlings. 1 kg of seedlings can be used in 1 acre while 20 grams of DAP Fertilizer is applied per square meter. You should note that there are different seed varieties and they perform differently under different conditions. Common hybrid varieties available in Kenya include Red Creole, Red Pinnoy, Jambar 1 and Red Bombay. The most popular seed variety in Kenya is the Jambar F1 since it produces high yield and the size of its onions are bigger. Challenges facing Onion Farming in Kenya Rains or Excess Watering: Too much rains or excess watering can water log the crop. If the rain in your area is too much, focus on growing the crop during the short rains. You can also raise the beds to ensure the water flows out of the field. Avoid excessive watering of your onions. The best type of irrigation on onions is drip irrigation. Overhead irrigation should be avoided as it causes fungal diseases. Diseases: Common diseases that affect onions include Downy Mildew, Bacterial Soft Rots, Pink/White Root, Botrytis, and Rusts. Use herbicides to get rid of the diseases. Pests: Common pests that attack onions include maggots, thrips, nematodes and the leaf miner. Use pesticides from accredited brands to get rid of the pests. Weeds: Weeds can also destroy your crop and should be removed occasionally either physically or through the use of herbicides. In one season, there should be at least 2 – 3 weeding sessions. Harvesting onions The best time to do the harvesting is during the dry season. Keep a calendar and record the essential dates to ensure you harvest at the right time. Bulb onions are ready for harvesting once they form a shiny membranous cover around the bulbs or when the foliage withers. Spring onions are ready for harvesting when they are 15 centimeters tall and 1.5 centimeters thick. Harvesting is done by pulling the bulbs and then chopping off the leaves. You then dry the bulbs in the sun before storing the produce. Nairobi is experiencing the lowest prices at the moment at 825 kshs per 15 kg bag. This can be attributed to Nairobi being the capital city and many farmers who produce the vegetable are in areas closely bordering it, such as Karatina, Mai Mahiu, Emali and Kieni having easy access to the market. Get more market analysis from our price trends to always get updated on the Onion trends. In conclusion, starting

Wondering if onion farming in Kenya is profitable? In this post, get an estimate of typical costs and profit estimates for growing high-yielding bulb onions such as Neptune F1. The analysis uses the costs and benefits method to know how much money you will make and use to grow an acre of the vegetable.  Are you in need of in-depth knowledge on onion and garlic production? If yes, we are a call away. Contact us for: Onion seedlings, Garlic seedlings, Germinated garlic cloves, Farm planning services, Soil testing, training on onion and garlic growing, Drip irrigation installation and maintenance, Agronomic support, Onion and Garlic value pack and Farm management. For free consultation, placing orders or booking a visit with an agronomist, please contact us via Call or what’s app +254703982228, Email: Info@oniondoctor.co.ke. You can also check out our social media handles for daily updates on TikTok: https://www.tiktok.com/@oniondoctorke?_t=ZM-8wmsTu0qumO&_r=1 Instagram: https://www.instagram.com/oniondoctorke?igsh=MTVoaHF3aWUydTJzaQ==Facebook:https://www.facebook.com/share/16SwgYn2dG/ Youtube:https://youtube.com/@oniondoctorke?si=u5Jnd-r0qU9UDYqL and Twitter: https://x.com/OnionDoctorKe?t=FR3JXlS_oN1vjjUgAtfyzg&s=09. Why Onion farming? Are there any benefits for growing onions? Onion farming can be a profitable and sustainable agribusiness. Some of the benefits you can get as a farmer include high profits, versatility, fast maturity, environmental sustainability, and nutritional benefits of this crop. Is there a Market for Onions in Kenya?  Onions are a key staple vegetable in Kenya. They have a steady demand and supply giving you opportunities for making money. In 2025, Kenya’s demand for onions reached 140,000 metric tons. It’s set to rise to 148,000 by 2026. In 2026, wholesale onion prices range from KES 47.65 to KES 68.49 per kilogram, with farm gate prices varying based on location, season, and quality. Retail prices fluctuate in Kenyan Shillings, typically ranging from KES 62.5 to KES 90.28 per kilogram, potentially higher in supermarkets and specialty stores. Assumptions for Onion Farming in Kenya Here are some assumptions made for profitable onion farming in Kenya. However, note that the factors that affect your profits can vary depending on the specific context and conditions of your farm. Revenues for onion farming in Kenya How much money can you make for growing onions per acre in Kenya? Your sales revenue is a product of your yield and average price.  The average onion yield per acre in Kenya is 20 tons. On the other hand, the average farmgate price of onions is Ksh 40 per Kg in Kenya’s rural markets.  Your total income would be Ksh 800,000 per acre. Your income can go higher if you manage to get higher yields or high prices using contract farming.  What are the Costs for onion farming in Kenya?  According to this analysis, it will cost you Ksh 125,000 to grow an acre of red onions in Kenya. The cost of farming onions per acre includes land acquisition, installations, soil test, seed acquisition, nursery establishment, sowing, nursery management, basin irrigation, fertilizers, manure, chemicals, labor, water, and other costs. In this comprehensive farming guide, learn how to grow the best quality onions in Kenya. It breaks down each cost and requirements for each.  Land Hiring Costs If you do not own some land, you can lease or hire some for onion farming projects. The cost of leasing an acre for onion farming in Kenya ranges from Ksh. 7,000 to Ksh. 30,000 per year, depending on the location. The best areas for onion farming in Kenya are Karatina, Oloitoktok, Naivasha, Kieni, Emali, Mai Mahiu, Nyeri, Nakuru, Narok, and Kinangop. Below are the optimal ecological requirements for growing bulb onions:  Land Preparation  To prepare your farm for onion farming, you should start by clearing the land of any debris or vegetation. Then, you need to prepare the soil by ploughing or digging deep into the bed.  Consider a first and second harrowing to remove any lumps. A new onion farming method is to create raised beds. You can lay drip irrigation lines to prevent seeds from being washed away by rain or irrigation water.  The other processes needed in your land preparation are soil testing and basal fertilizer application. Consult a reputable soil testing company such as Onion Doctor for soil testing. It will inform your soil PH, available nutrients, and fertilizer needs.  Onion seed variety selection The next step is looking for high-quality seed or seedlings for your farm.  choose high-yielding options such as Jambar F1, Red Pinoy F1, and Red Creole. These varieties are known for their high yield and good quality. For a comprehensive guide, see some of the best onion varieties in Kenya. You can buy clean seedlings from a good propagator like onion doctor. The price of onion seedlings in Kenya ranges from Ksh. 1 per seedling. The cost varies depending on the supplier and location.  Setting up an onion nursery To set up an onion nursery, you need to prepare the soil by removing any lumps and digging deep into the bed.  The recommended onion seed rate in Kenya is  0.8-1.2 kg of fresh onion per acre. Onion seedlings take around 6 weeks to mature before transplanting. The seedlings should be around 6-8 inches tall and have three leaves before transplanting Transplanting  To transplant onions, wait until the seedlings are 6-8 weeks old or have 3-5 well-formed leaves and a pencil-thick base. Transplant the seedlings in 2.5-3 cm deep trenches at a spacing of 30 cm between rows and 8-10 cm between plants. Before transplanting, irrigate the seedbed and the field well a day before.  Carefully pull out the seedlings to avoid damage, cut of the green tops to hasten take-off, and don’t bury onion sets more than one inch under the soil. Use healthy seedlings that are free from pests and diseases and harden them off by reducing watering and shading before transplanting. Fertilizer and Manure application Looking for the best fertilizer for onions in Kenya? Bulb Onion is a heavy feeder and does well in soils with high organic content like manure. It will also require the application of planting and top-dressing fertilizers. For this, use the soil test analysis. Below are the common recommendations for fertilizer and

Welcome to the fascinating journey of fertilization management in onion farming in Kenya! Fertilization is at the heart of achieving healthy, high-yield onion crops, and it plays a vital role in ensuring that farmers reap the full benefits of their hard work. With Kenya’s diverse soils and climates, proper nutrient management helps onions grow strong, resist diseases, and develop the firm bulbs that are in such high demand across markets. By understanding the balance of organic matter, nitrogen, phosphorus, and potassium, farmers can unlock the true potential of their land while maintaining sustainability. Fertilization management is not just about feeding the crop—it’s about nurturing the soil, supporting long-term productivity, and building a foundation for agribusiness success. Are you in need of in-depth knowledge on onion and garlic production? If yes, we are a call away. Contact us for: Onion seedlings, Garlic seedlings, Germinated garlic cloves, Farm planning services, Soil testing, training on onion and garlic growing, Drip irrigation installation and maintenance, Agronomic support, Onion and Garlic value pack and Farm management. For free consultation, placing orders or booking a visit with an agronomist, please contact us via Call or what’s app +254703982228, Email: Info@oniondoctor.co.ke. You can also check out our social media handles for daily updates on TikTok: https://www.tiktok.com/@oniondoctorke?_t=ZM-8wmsTu0qumO&_r=1 Instagram: https://www.instagram.com/oniondoctorke?igsh=MTVoaHF3aWUydTJzaQ==Facebook:https://www.facebook.com/share/16SwgYn2dG/ Youtube:https://youtube.com/@oniondoctorke?si=u5Jnd-r0qU9UDYqL and Twitter: https://x.com/OnionDoctorKe?t=FR3JXlS_oN1vjjUgAtfyzg&s=09. Key Takeaways Understanding Onion Growth Requirements As a seasoned farmers, I’ve learned onions need different nutrients at different times. In the early stages, they do well in well-drained, rich soil with a pH of 6.0 to 7.0. Adding compost or aged manure to the soil helps a lot. It makes the soil more fertile and better at draining water, which is key for onion growth stages. Growth Stages and Nutrient Needs Onions need about 150-200 pounds of actual nitrogen per acre during the growing season. Phosphorus is best applied two inches to the side and two inches below the seed at planting. This helps seedlings grow strong early on. As onions get bigger, they need more nitrogen after the bulbs start to form, especially after mid-July. Too much nitrogen can make onions mature late and not store well. Optimal Soil Conditions for Onions Onions need medium levels of potassium to grow well. Most soils have enough potassium. But, heavy rain can cause the soil to crust over, hurting onion growth if seeds or seedlings are disturbed before they emerge. Using tools like disks, knives, duck feet, and furrow openers helps keep weeds away and promotes onion growth. Best Fertilizer for Onion: Essential Types and NPK Ratios Onions need a lot of nutrients to grow well. Knowing the best NPK ratios is key for a big harvest. Let’s look at the main fertilizers and what they offer for healthy onions. Start with a 10-20-10 fertilizer when planting. It helps onions grow strong roots and grow fast early on. Later, switch to a 21-0-0 fertilizer every 2-3 weeks. This boosts leaf and stem growth. When onions start to form bulbs, use a 10-10-10 or 12-12-12 fertilizer. These balanced formulas help bulbs grow big and strong. Keeping the NPK ratio right is vital for onions that are ready to store. Fertilizer Type NPK Ratio Growth Stage Starter Fertilizer 10-20-10 Planting Nitrogen-Rich Fertilizer 21-0-0 Early Growth (3 weeks after planting) Balanced Fertilizer 10-10-10 or 12-12-12 Bulbing and Maturation Changing the fertilizer based on the onion’s growth is crucial. Giving the right nutrients at the right time helps onions grow big and flavorful. Timing Your Fertilizer Applications Getting the timing right for your onion fertilizer is key. It helps your onions grow well and produce more. You need to match the fertilizer schedule with the onion’s needs at each stage. Early Season Fertilization Begin with a high-nitrogen fertilizer when you plant or soon after. This gives the onion a strong start. Use ammonium sulfate (21-0-0) or calcium nitrate (15.5-0-0) based on your soil’s pH. Apply these every 3 weeks. Adjust the amount based on your soil and the onion’s growth. Mid-Season Nutrient Requirements As onions grow, their needs change. In the slow and rapid growth phases, add more nitrogen. This helps the onions grow strong leaves and big, tasty bulbs. Keep up a regular fertilizing routine. Stick with the same high-nitrogen fertilizers from the start. When to Stop Fertilizing Stop fertilizing when the onions start bulbing. This is when the ground cracks as the bulbs grow. Fertilizing too much after this can harm the bulb’s quality and storage. By sticking to this fertilizing plan, you’ll give your onions the right nutrients at the right time. This will lead to a great onion harvest. Chemical Fertilizers and Their Benefits Chemical fertilizers are great for growing onions. They give plants the nutrients they need at each stage. There are many types, like balanced granular, nitrogen-rich, and slow-release, all good for onions. Balanced Granular Fertilizers Balanced granular fertilizers, like 10-10-10 or 12-12-12, are popular. They have nitrogen, phosphorus, and potassium. These nutrients help onions grow strong and produce big, tasty bulbs. Nitrogen-Rich Solutions Nitrogen is key for onion growth. It makes leaves green and bulbs big. Fertilizers like ammonium sulfate and calcium nitrate boost growth. They help onions grow well. Fertilization Guidelines for Onion Cultivation – Critical Fertilization Stages Below, we will mention some general guidelines regarding onion plant nutrition for commercial cultivation.  Onion is considered a heavy feeder and, compared to other vegetables, needs more nutrients to produce high yields. To decrease the risk of nutrient losses and to supply the plants with the amounts of nutrients in the most critical periods, it is best to split the total amount of nutrients into more than 1-2 doses. There is more than one fertilization program a farmer can apply depending on the type of fertilizers used and their combination (e.g., only base and side dressing, and fertigation + foliar nutrition. In some cases, 40 kg per hectare of sulfur (S) is also applied. Fertilizer amounts may need to increase if the crop is grown from seed rather than sets or transplants. Knowing that the

Whether you’re a smallholder farmer or managing a large-scale farm, understanding the best irrigation practices can make the difference between an average harvest and a bumper yield. In this blog, we’ll walk you through tried-and-tested methods that save water, reduce disease, and boost productivity. Water Management in Onion Cultivation in Onion irrigation in Kenya Water Quality Considerations Salinity Irrigation water with high salinity can negatively affect onion cultivation, causing water stress and reducing bulb growth. It is essential to monitor the electrical conductivity (EC) of the water and take corrective measures if necessary, such as mixing with lower salinity water or improving soil drainage. Contamination The use of water contaminated with pathogens, heavy metals, or chemicals can be harmful to the crop. It is important to ensure that the water used comes from clean and safe sources. Drainage Management A good drainage system is essential to avoid waterlogging, which can lead to bulb rot and disease proliferation. This includes: Drip Irrigation System A drip irrigation system is a method of watering plants by delivering water and directly to their roots through a network of tubes, pipes, and emitters, maximizing efficiency and minimizing  water loss. Reasons for Drip Irrigation in Onion Farming Components of Onion Drip Irrigation System Furrow irrigation System This irrigation method is commonly used for crops like corn, wheat, rice, and particularly in areas with relatively flat terrain. Furrow irrigation has been a reliable method of irrigation for centuries due to its simplicity and cost-effectiveness. It requires minimal infrastructure compared to other irrigation systems like drip or sprinkler irrigation. Furrow irrigation is a surface irrigation technique that involves creating shallow trenches (furrows) between crop rows, which are then filled with water. These furrows are designed to direct the flow of water to the root zones of plants. As the water moves down the furrows, it infiltrates the soil, providing moisture to the plants’ roots. Purpose of Furrow Irrigation Furrow irrigation serves several purposes in modern agriculture. Its main goal is to supply water to crops, but it also offers other benefits that make it an attractive option for farmers in various regions. Here are the primary purposes of furrow irrigation: 1. Efficient Water Distribution Furrow irrigation helps distribute water evenly across the crop field, ensuring that each plant receives adequate moisture. The system works by allowing water to flow between the rows of crops and seep into the soil. By maintaining proper flow rates and furrow depth, farmers can control how much water is supplied to each plant. 2. Minimizing Water Waste Unlike flood irrigation, where water is distributed evenly over a large area, furrow irrigation ensures that water is directed specifically to the root zones of plants. This targeted water distribution reduces water wastage, making furrow irrigation a more efficient method compared to other surface irrigation techniques. 3. Suitable for a Variety of Crops Furrow irrigation is versatile and can be used for a wide range of crops. It is particularly effective for row crops that require consistent watering, such as cereals, vegetables, and legumes. Additionally, furrow irrigation can be adapted to various soil types and climates, making it a popular choice in regions where other irrigation methods may not be feasible. 4. Cost-Effective One of the major advantages of furrow irrigation is its low cost of implementation. Unlike drip or sprinkler systems, which require more complex infrastructure and equipment, furrow irrigation only needs simple trenching and water channels. This makes it a budget-friendly irrigation solution for farmers, especially those operating on smaller farms or in developing countries. 5. Improving Soil Structure Furrow irrigation can also help improve soil structure. The regular supply of water encourages the growth of healthy plant roots, which can enhance soil aeration and reduce compaction. This can lead to improved soil health and better crop yields in the long term. Basin Irrigation System Advantages of Basin Irrigation System Basin Irrigation system is mostly used by farmers with sufficient water and small scale farmers. This method of Irrigation is used by onion farming. Principles of Basin Irrigation Basin irrigation involves the creation of a level or gently sloping basin around the crops, which is then flooded with water. The water is allowed to infiltrate the soil, providing the necessary moisture for the crops to grow. The basin is typically surrounded by bunds or levees to prevent water from flowing out, and the water level is controlled to ensure that the crops receive the right amount of moisture. The principle behind basin irrigation is to provide a uniform distribution of water to the crops, minimizing runoff and evaporation losses. By controlling the water level and flow rate, farmers can optimize water use and reduce waste. Advantages and Limitations of Basin Irrigation in Onion Farming in Kenya. Basin irrigation has several advantages, including: However, basin irrigation also has some limitations: Soil Management Techniques in Onion Farming In Kenya. Understanding Onion Soil Requirements Onions are one of the most widely cultivated crops in the world, and their growth is heavily dependent on the quality of the soil. To ensure a successful onion harvest, it’s essential to understand the specific soil requirements of onions. In this section, we’ll delve into the world of onion soil preparation, exploring the ideal soil conditions, common soil challenges, and practical tips for creating an onion-friendly soil environment. Ideal Soil Conditions for Onions Onions thrive in well-draining, fertile soils with a pH range of 6.0 to 7.0. They require a soil with good structure, adequate moisture, and a balanced nutrient profile. Here are some key characteristics of ideal onion soil: Common Soil Challenges for Onions While onions are relatively easy to grow, they can be susceptible to various soil-related challenges. Here are some common soil issues that can affect onion growth: Assessing Your Soil Before planting onions, it’s essential to assess your soil’s condition, structure, and nutrient profile. Here are some steps to help you evaluate your soil: