Cashew Nut Farming in Kenya: Turning the Coastal Heat into Profits

Irungu J Farming guides September 17, 2025

Introduction to Cashew Nuts

Walk through parts of Kilifi, Kwale, or Lamu, and you’ll notice scattered cashew trees dotting the landscape. For years, they’ve been left to grow wild, harvested casually, and sold cheaply.

But the global demand for cashew nuts has been rising, and farmers are beginning to see them for what they truly are, a golden crop. With proper management, cashews can be one of the most rewarding long-term investments for Kenyan farmers.

Why Cashew Nuts Matter

Cashew nuts aren’t just tasty snacks; they’re among the most valuable nuts in the world, commanding premium prices in both local and export markets.

In Kenya, processed nuts fetch between KSh 700–1,200 per kilo, with higher-grade exports going for even more. Apart from the nut, the apple can be processed into juice, wine, or jam, adding extra income streams.

For counties along the Coast where rainfall is low and soils are sandy, cashews offer the perfect match: a hardy, drought-tolerant crop that thrives where others fail.

Ideal Climate and Soil

Cashew trees grow best in warm, coastal climates with annual rainfall between 700–1,200 mm. They tolerate drought, but they don’t do well in waterlogged areas.

The best soils are sandy loams, slightly acidic (pH 5–6.5). Altitudes of sea level up to 1,200m are suitable, making coastal Kenya the best zone, though parts of Eastern Kenya can also support the crop.

Land Preparation and Planting

Clear the land and dig planting holes 60cm wide and 60cm deep. Mix topsoil with 20kg of well-decomposed manure. Spacing should be about 10m by 10m, since cashew trees spread widely.

Cashew is propagated from grafted seedlings, which mature faster and give higher yields than wild varieties. In Kenya, grafted seedlings go for around KSh 150–300 each, depending on the nursery.

Plant at the onset of rains for best establishment.

Caring for Cashew Trees

Cashews don’t need excessive care, but good management makes a huge difference in yields:

Weeding: Keep the base of the tree weed-free, especially when young.
Pruning: Train the tree to a strong main stem and cut off weak or diseased branches. This improves airflow and reduces pest attack.
Manure & Fertilizer: Apply organic manure once a year. For mature trees, top-dress with a little NPK (10:10:10) before flowering.
Watering: Supplemental irrigation during prolonged dry spells boosts flowering and fruit set.

Flowering, Harvesting, and Yields

Cashew trees start flowering in the third year for grafted varieties, though full production comes in years 5–7. Each tree can produce 7–15 kg of nuts per season, depending on care.

Harvesting involves collecting fallen apples and separating the nut. The nuts are dried before shelling. The apples, often wasted, can be sold fresh in local markets or processed into juice and wine, which is popular in parts of Goa (India) and could be replicated in Kenya.

Market Opportunities

Locally, demand is strong from processors and nut companies based in Coast and Nairobi. With value addition, profits multiply, roasted and packaged cashews fetch nearly double the price of raw nuts.

On the export side, India, Vietnam, and the Middle East are major markets. Kenyan cashews once had a strong global reputation, and with proper processing, they could regain that status.

Common Challenges

Pests and Diseases: Cashew nut pest (Helopeltis bug) and powdery mildew reduce yields if not controlled. Spraying with neem-based or recommended pesticides helps.
Post-harvest Handling: Poor drying and storage cause aflatoxin and low quality.
Market Fluctuations: Prices can drop if too many farmers sell raw nuts instead of processed ones.

Why Cashew Farming Makes Sense

Cashew trees are long-term investments. Once established, they can produce for 30–40 years, offering steady income with relatively low maintenance.

For farmers in Kenya’s Coast, planting cashew nuts today is like planting a bank account that pays dividends for decades.

Bottom Line

Cashew farming is not just about nuts; it’s about creating wealth from a hardy crop that fits perfectly into Kenya’s coastal climate. With grafted seedlings, good care, and value addition, cashew nuts can easily shift from a forgotten village crop to a serious agribusiness venture.