Onion Farming in Kenya: How Onion Doctor Helps You Boost Yields and Manage Weeds After the Rainy Season

Are you in need of in-depth knowledge on onion and garlic production? If yes, we are a call away. Our service chatter includes: Onion seedlings, Garlic seedlings, Farm planning services, Soil testing, 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.

Onion farming in Kenya has grown rapidly over the years, thanks to the increasing demand for onions both locally and regionally. However, for farmers to succeed, it’s crucial to apply the right farming practices—especially after the rainy season, when weed pressure can significantly affect yields.

At Onion Doctor, we specialize in supporting farmers with expert advice, premium onion seedlings, soil testing, farm planning, drip irrigation solutions, and agronomic support to ensure your onion farm thrives.

Kenya’s warm climate, fertile soils, and rising market demand make it an ideal location for onion farming. Counties like Kajiado, Narok, Makueni, and Meru are leading the way, but there’s growing potential in almost every part of the country.

A well-managed onion farm can produce 15 to 18 tons per acre, depending on the variety and farming practices used. With proper guidance from partners like Onion Doctor, farmers can unlock even higher yields and improve their profitability.

While rain is critical for many crops, excessive rainfall during or after onion planting can lead to:

  • Soil erosion
  • Leaching of nutrients
  • High weed emergence
  • Increased risk of fungal diseases

Among these, weed infestation becomes a major challenge immediately after the rainy season. If not controlled early, weeds compete with onions for nutrients, water, and sunlight, significantly lowering yield and quality.

Here’s how you can manage weeds effectively after the rains:

Early and frequent weeding is essential. At Onion Doctor, we recommend starting your first weeding 2–3 weeks after transplanting, then repeating every two weeks until the canopy covers the soil.

Applying a thin layer of organic mulch (like dry grass or straw) around onion plants helps suppress weed growth, retain soil moisture, and improve soil structure.

Under the guidance of qualified agronomists like those from Onion Doctor, farmers can safely use selective herbicides to control weeds before they emerge without harming onion seedlings.

Correct plant spacing during transplanting ensures onions establish quickly and naturally shade out weeds, reducing their growth.

Mechanical methods such as shallow cultivation or careful hand weeding protect the onion roots, which are shallow and easily damaged.

At Onion Doctor, we walk with you from planting to harvest. Our services include:

  • Supplying certified onion and garlic seedlings for high germination and better disease resistance.
  • Soil testing and farm planning to help you know exactly what your soil needs.
  • Customized drip irrigation systems to manage water efficiently, especially after unpredictable rains.
  • Agronomic support and e-extension services to ensure your weed management and disease control strategies are top-notch.
  • On-farm training programs to empower you with skills and knowledge.

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