How I Make Sh.1.2 Million Per Year From Garlic Farming


Samuel Mwenda’s garlic onions farm is located off the Meru-Nanyuki Road in Kisima, Buuri sub-county.

The farm owner has seen his fortunes rise to millions from the crop. On a good year, he makes up to Sh. 1.2 million from his produce that is planted on parcels of his 10 acre farm on rotational basis.

It has been 13 years since he started garlic farming, after finding the going tough with tomatoes and French beans he was farming on his 10-acre farm.

“I started farming by growing the two crops, but the profits were minimal due to diseases. Tomatoes were prone to diseases making me spend more on pesticides. On the other hand, the market for French beans was small,” says Mwenda, who has been a farmer throughout his adult life, also keeping sheep, growing wheat and potatoes.

So in 2003, he planted his first garlic plants on quarter acre, testing the waters after getting seeds from a farmer in Timau, where garlic is widely grown.

Garlic has a dormancy of up to eight months after planting. To break it, he stored seeds in sisal sacks for warmth to enable the shoots to sprout in three to four months.

Other farmers use a bio-stimulant hormone, which breaks the dormancy and helps the seeds to germinate in less than a month.

“It took me about 10 months to get my first harvest after waiting for about five months during the dormancy period and four-and-a-half months for the crops to mature,” says Mwenda, whose investment was Sh.50,000.

“I planted 45kg of garlic and harvested close to 1,000kg, which I then sold at Sh.260 each kilo. A kilo of garlic seeds yields between 30Kg and 40kg. It was a surprise and motivation to me.”

But before the harvest, all had gone well until when the crop was attacked by thrips. “All along, I had known that garlic is hardly affected by diseases. But I realized my mistake, the garlic farm bordered a maize plantation with the cereal acting as a host for the pests,” he recounts.

To control thrips, he also learnt that the pesticides used are crops specific which means you cannot apply chemicals used to control thrips in French beans and baby-corn to control the pest in garlic.

Mwenda says garlic plants need fertilizer like CAN and NPK 1717 to boost the yield.

However, he adds that some diseases like blight and rust may also affect the plants on the farm, therefore, appropriate pesticides should be used.

“I grow cloves that I have stored to break dormancy. The larger the clove, the bigger the bulb during harvesting. When planting at 10cm between plants and 30cm between rows, I use 100kg of fertilizer and some other 100kg of the top-dressing fertilizer before the garlic starts forming tubers,” says Mwenda, noting mulching helps the crop grow better.

Garlic is ready for harvesting when the leaves wither. One uproots the crop, cuts the roots and the stems and separates the bulb for drying.

Mwenda grows the crop on a rotational basis on half-acre portions, planting 200kg on each. This method has ensured he earns throughout the year and helps keep diseases at bay.

“Since I started garlic farming, I have been planting the crop twice a year. I grow the Gatumani type but l am planning to change the variety because there are others that mature faster,” he offers, adding from each portion he harvests about 3,000kg.

He sells a kilo at Sh.360 when demand is high.

In May, the farmer earned about Sh.600,000 after selling 3,000kg from half-acre.

“My expenses include labour, buying of seeds at Sh.200 a kilo and pesticides costs. With the money I ended up with, I was a happy farmer,” says Mwenda, who through garlic (and his other farming ventures) has been able to educate his eight children to college level and start a sheep farm where over 100 Merino animals thrive.

According to Mwenda, demand for garlic peaks between August and September, when a kilo goes for between Sh.300 and Sh.400.

And from December to January, prices are lower since the market is flooded with the commodity.

However, despite the price fluctuation, garlic prices do not fall below Sh.200 a kilo.

His greatest challenge remains pests and diseases, which include rust and thrips.

“Thrips are a big enemy of the crop. I spray twice or thrice per week depending on the stage of maturity and the rate of infection,” he says, noting an influx of imported garlic from Asia has started to cause worry among farmers.

Head of Agriculture Department at Meru University of Science and Technology Dr Peter Masinde says garlic can grow in wide range of climatic conditions.

“Cool conditions with an adequate soil moisture for early growth, followed by warm, drier conditions for maturation, harvesting and drying are ideal,” he says, adding bulbing of garlic requires longer exposure to daylight.

He adds that cloves stored at temperatures higher than 25 degrees Celsius will not bulb properly when planted.

“Bulbing requires that first the cloves or the plant be exposed to low temperatures. When the plant has about 12 to 14 leaves size, bulb swelling can start but this needs long days and warm temperatures. Exposing the plants to cold temperatures for too long can cause clove formation in all leaf axils, hence the bulb appears to be rough,” he warns.

Garlic, just like ordinary onions, need nitrogen, phosphorus and potassium nutrients for higher yields.

“Adequate nitrogen is necessary for maximum bulb production, while excess reduces the yields,” says Dr Masinde, noting that the amount of nitrogen and phosphorus fertilizers to apply should be determined after a soil test is done.

Other major pests in garlic farming include cut worms, leaf minors and nematodes, and can be controlled by use of approved insecticides.

*Preparing Garlic Seeds*

To make seeds, one buys or harvests the garlic onion and then dries in the sun for one month before disinfecting in chlorine.

The next step is to clean the onion bulbs using organic soap. The purpose for doing this is to wash away the disinfectant and dirt.

After the cleaning, it is important to prevent mould formation on ‘bruised’ onions. Organic salt is used to do the work.

At this point one should mix a bio-stimulant in water and the onions immersed in the solution for 12 hours. This is to break the onion’s dormancy, which lasts up to eight months when planted. The stimulant makes the seeds germinate in two weeks.

If not added, and the rest of the procedures are followed, it takes about three months.

The onions are then stored in a room whose temperature should be controlled to 20 degrees Celsius for germination to take place.

The treated onions are left in the room for two weeks before they are then dried in the sun for two days.

The garlic bulb seeds are ready for splitting into parts called cloves, from which shoots will emerge.


Garlic farming is a lucrative venture with the demand for the crop peaking in the months between May, June, July, August, and September where a kilo cost anywhere between Ksh.300 and Ksh.400.

When the demand is stable from December to January, the prices decline to around Ksh.200.

Nevertheless, it is important to note that despite the price instabilities, it is unlikely that garlic will fall below Ksh.200 per kilo any time soon.

Under good agricultural practices an acre of garlic produces between 4000kgs to 5000kgs.

Written By:
Justine Nyachieo
Business Man & Mentor

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