Planning polyhouse farming in Unjha? Unjha is a town in Mehsana district, Gujarat, home to about 57,000 people (GeoNames)[1][2], about 90 km from Ahmedabad. Below we use the town's monthly temperatures, humidity and rainfall to work out which structure fits, which crops to grow and in which months, before you spend on construction.
Climate for polyhouse farming in Unjha
May is the hottest month in Unjha, with average daily highs of about 42°C. January has the coolest nights, averaging 11°C.[3] The area gets about 691 mm of rain a year, most of it in July to September, peaking in August at about 244 mm. Average humidity stays at 75% or more in August to September, which raises the risk of leaf disease and slows evaporative cooling. Unjha sits about 111 m above sea level.[2] On the Köppen–Geiger climate map, Unjha falls in the hot semi-arid zone (BSh).[4]
Unjha climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
27.4
10.7
29
1
Feb
31.0
13.6
25
1
Mar
35.9
18.4
23
4
Apr
40.4
22.8
25
4
May
42.3
26.0
34
6
Jun
39.3
27.5
51
73
Jul
33.9
25.6
72
242
Aug
31.2
24.0
82
244
Sep
32.1
23.0
76
104
Oct
33.8
20.1
53
7
Nov
31.5
16.2
39
4
Dec
28.3
12.3
33
1
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Unjha. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[3]
Advantages of protected cultivation in Unjha
1
Year-round crops
Under cover, chilli pepper can be grown for 11 months a year in Unjha, so you can supply buyers every week instead of one open-field season.
2
Better yield and price
Plants grow without rain, hail and wind damage, so yields are higher and more even, and clean, graded produce sells at a better price, especially off-season.
3
Less water
With only about 691 mm of rain a year here, drip irrigation under cover saves water: less is lost to evaporation and run-off than in the open field.
4
Less pesticides
Insect net on vents and doors keeps out most pests, and controlled ventilation helps with leaf disease in the humid months (August to September), so you spray less often.
5
Subsidy eligible
Polyhouse, shade net and nethouse projects in Gujarat can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department.[5]
Which polyhouse suits Unjha?
For polyhouse farming in Unjha, the structure decides which months you can crop and what it costs to run. The heat in Unjha comes with dry air. In April to June, average highs reach 42°C while average humidity is only about 37%. In that dry air, wet pads can bring a 42°C May afternoon down to roughly 31°C inside a Fan & Pad polyhouse, which keeps herbs and vine crops going; lettuce will still struggle in the hottest weeks. For vine crops such as capsicum and cucumber, a naturally ventilated polyhouse with a shade screen works from February and December and costs less to run.
Plan for heavy rain in August (about 244 mm): raise the plinth, size the gutters for that month and keep drains away from the nutrient tank. Sunlight peaks in May at about 7.5 kWh per m² a day, so add a shade screen for leafy greens in the brightest months. A nethouse, the lowest-cost option, can grow hardy crops in October to February, when it is mild and fairly dry.
Crops for Unjha
Based on Unjha's climate, the crops with the longest growing windows are chilli pepper (11 months), capsicum (10 months) and cucumber (10 months). Chilli pepper fits February to December with Fan & Pad cooling. These are the crops we would plan first for polyhouse farming in Unjha.
Months each crop suits in Unjha
Crop
Naturally ventilated polyhouse
With Fan & Pad cooling
Capsicum
Feb and Dec
Feb–May and Jul–Dec
Tomato
Dec–Feb
Aug–Apr
Cucumber
Feb and Jul–Nov
Feb–Nov
Chilli pepper
Feb, Aug–Sep and Nov–Dec
Feb–Dec
Brinjal
Feb, Aug–Sep and Nov
Feb–Nov
Lettuce
Jan
Aug–Apr
Broccoli
Difficult
Nov–Feb
Strawberry
Difficult
Dec–Feb
Rose
Jan
Oct–Mar
Gerbera
Jan
Sep–Apr
Carnation
Difficult
Nov–Feb
Chrysanthemum
Jan
Oct–Mar
Anthurium
Difficult
Mar–May and Jul–Nov
Orchids
Difficult
Mar–May and Jul–Nov
Lilium
Difficult
Nov–Feb
Kryzen planning estimate from the monthly averages above and each crop's usual day and night temperature range. Variety, soil or substrate temperature and shading change the result, so confirm with a trial.
₹7,198Spending per person per month, urban Gujarat, 2023–24[6]
90 kmto Ahmedabad, the nearest metro (straight line)
Urban households in Gujarat spent an average of ₹7,198 per person per month in 2023–24, close to the all-India urban average of ₹7,078.[6] Local demand in Unjha may be small for exotic greens, so plan where the rest of the harvest goes. Mahesana, about 20 km away, is the nearest larger market on our list. For premium vegetable and flower buyers, Ahmedabad is within a day's delivery, about 90 km away.
Polyhouse farming in Unjha with Kryzen
We have built 12 projects in Gujarat so far (see our project map (opens in a new tab)). Unjha is about 450 km in a straight line from our Nashik warehouse, our nearest site.
Towns near Unjha
We also plan and build farms in these towns near Unjha:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Unjha: FAQs
Can a polyhouse farm run all year in Unjha?
Yes, with the right structure. For Unjha we would plan a Fan & Pad polyhouse for leafy greens. Even then, lettuce is hard to grow in May to July, so plan another crop for those months.
Which polyhouse is best for Unjha?
With May highs of about 42°C and 34% average humidity in that month, we would start with a Fan & Pad polyhouse for leafy greens.
Which crops should I grow in a polyhouse in Unjha?
Going by the monthly climate, chilli pepper, capsicum and cucumber have the longest growing windows. Confirm prices and volumes with buyers before you plant.
Is polyhouse farming profitable in Unjha?
It can be, if the crop, the structure and the buyers match. In Unjha, chilli pepper and capsicum have the longest seasons under cover. Confirm prices and volumes with buyers first; our Detailed Project Report works out the cost, yield and returns for your plot.
Does Kryzen build polyhouses in Unjha?
Yes. Our nearest site is our Nashik warehouse, about 450 km away, and we have built 12 projects in Gujarat.
Is there a subsidy for polyhouse or hydroponic farms in Gujarat?
Yes. Protected cultivation projects in Gujarat can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department. Check the current rate and area limit when you apply.
Discuss your Unjha farm project
Share your plot location, water test and crop targets. We will suggest the right structure and growing system, and send an itemised quotation.
A computer engineer turned hydroponic farmer from a multigenerational farming family in Satara. Sudhir founded Kryzen in 2019, and the team has since built 350+ protected and hydroponic farms across India.
