Greenhouse construction in Kenya vary from small units of 120M sq, to large commercial units occupying ten of acres. The table below shows common greenhouse sizes for small to medium acreage

Greenhouse Construction in Kenya

A. Small

Dimensions in meters	Tomato Crop Population	Price in KES
15 x 8	600	KES 195,000
24 x 8	800	KES 275,000
30 x 8	1,200	KES 365,000
40 x 8	1,500	KES 530,000
48 x 8	1,600	KES 600,000

 

B. Medium

Dimensions in meters	Tomato Crop Population	Price in KES
24 x 16	1,500 – 1,600	KES 540,000
30 x 16	2,400	KES 660,000
40 x 16	3,000	KES 990,000

Greenhouse Construction In Kenya

Factors to consider

1. Land area. The area of the greenhouse will be restricted by the land area available to set it up
2. Water availability. In water deficit locations, the size of the greenhouse will be limited by the the area that thos water volume will irrigate optimally
3. Budget. Greenhouse constriction is a capital investment. The financial resources available will determine the size of the greenhouse built in a session
4. Use. A greenhouse to propagate seedlings for a farm will be smaller in size than the greenhouses where these seedling are being established

Greenhouse construction in Kenya

These are the materials that determine our steel greenhouse construction prices in Kenya

I. UV treated greenhouse polythene with anti drip properties

This is the key material that protects the crop from the elements of weather; sun, wind and rain. It creates the ‘greenhouse effect’, and minimises disease and pest incidences on the crop. It is either clear or yellow in color. Clear greenhouse polythene for fruiting crops, or in ornamentals, bi or multi colors. This is because it allows in more light which these need for photosynthesis, the process that makes food for the plants. Yellow is for vegetative crops, and mono color ornamentals. In mono color ornamentals, it intensifies the color

II. Galvanised steel bars

They provide structural support to the greenhouse, and also to the crop as ‘crop support structures’ for tall indeterminate crops such as; tomato, peppers, and cucumbers

III. UV treated high density insect nets

These nets keep away insect pests. They are for self pollinating (do not require external pollinators such as insects and birds) greenhouse crops

IV. Bird nets

These are only used in greenhouse crops that require insect pollination from bees, butterflies, hornets and many other pollinating insects. They allow in the insects, but keep away bird pests. An example of such a crop is strawberry

V. Profiles

They are screwed onto the galvanised steel bars so that the greenhouse cover is tucked in them

VI. Wiggle wires

Once the greenhouse cover is tucked in the profile, wiggle wires keep it in place so that it is not removed by wind or other physical force. Wiggle wires have a plastic covering to prevent damage to the greenhouse paper the are in direct contact with  

VII. Screws

The join the profiles to the galvanised steel structure

VIII. Concrete

This is what supports the galvanised steel structures on the ground and keeps them upright     Successful greenhouse farmers in Kenya grow both none food and food crops in our metallic greenhouses. Common greenhouse food crops are; tomato, peppers, strawberries, and cucumber.  Galvanised steel bars, insect netting, screws, and profiles are our greenhouse construction materials. With labor addition, all now constitute your final greenhouse cost Every Grekkon Limited greenhouse has a drip irrigation system for crop production, or a misting/ fogging system for seedlings propagation. Sprinkler irrigation systems are not installed in greenhouses  

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