Planning polyhouse farming in Asansol? Asansol is a large city in Paschim Bardhaman district, West Bengal, home to about 5.6 lakh people (Census 2011)[1], about 190 km from Kolkata. This guide works from Asansol's own monthly climate to suggest the protected structure, the crops to start with, and the months each crop is likely to do well.
Climate for polyhouse farming in Asansol
May is the hottest month in Asansol, with average daily highs of about 39°C. January has the coolest nights, averaging 9°C.[2] The area gets about 1,405 mm of rain a year, most of it in May to September, peaking in July at about 327 mm. Average humidity stays at 75% or more in July to October, which raises the risk of leaf disease and slows evaporative cooling. Asansol sits about 97 m above sea level.[1] On the Köppen–Geiger climate map, Asansol falls in the tropical savanna (dry winter) zone (Aw).[3]
Asansol climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
23.3
9.1
62
12
Feb
28.2
13.0
54
14
Mar
34.2
18.2
44
22
Apr
39.2
23.3
44
47
May
39.3
25.9
54
118
Jun
35.5
26.5
70
220
Jul
31.8
25.4
84
327
Aug
30.9
25.0
87
292
Sep
30.2
24.2
88
237
Oct
29.2
20.8
81
99
Nov
26.5
15.1
74
9
Dec
23.2
10.3
70
8
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Asansol. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[2]
Advantages of protected cultivation in Asansol
1
Year-round crops
Under cover, chilli pepper can be grown for 10 months a year in Asansol, 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
Drip irrigation under cover uses less water than flood irrigation, and the roof keeps July's 327 mm of rain off the crop and the soil.
4
Less pesticides
Insect net on vents and doors keeps out most pests, and controlled ventilation helps with leaf disease in the humid months (July to October), so you spray less often.
5
Subsidy eligible
Polyhouse, shade net and nethouse projects in West Bengal can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department.[4]
Which polyhouse suits Asansol?
For polyhouse farming in Asansol, the structure decides which months you can crop and what it costs to run. The heat in Asansol comes with dry air. In April to May, average highs reach 39°C while average humidity is only about 49%. In that dry air, wet pads can bring a 39°C May afternoon down to roughly 33°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 August to November and costs less to run.
Plan for heavy rain in July (about 327 mm): raise the plinth, size the gutters for that month and keep drains away from the nutrient tank. Sunlight peaks in April at about 6.3 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 February and October to November, when it is mild and fairly dry.
Crops for Asansol
Based on Asansol's climate, the crops with the longest growing windows are chilli pepper (10 months), capsicum (9 months) and tomato (9 months). Chilli pepper fits February to November with Fan & Pad cooling. These are the crops we would plan first for polyhouse farming in Asansol.
Months each crop suits in Asansol
Crop
Naturally ventilated polyhouse
With Fan & Pad cooling
Capsicum
Feb and Aug–Nov
Feb–Apr and Jun–Nov
Tomato
Feb and Aug–Dec
Feb–Apr and Jul–Dec
Cucumber
Jul–Nov
Mar–Nov
Chilli pepper
Feb and Jul–Nov
Feb–Nov
Brinjal
Jul–Nov
Mar–Nov
Lettuce
Nov–Jan
Sep–Mar
Broccoli
Dec–Jan
Nov–Feb
Strawberry
Dec–Jan
Nov–Feb
Rose
Nov–Dec
Feb–Mar and Oct–Dec
Gerbera
Nov–Dec
Feb–Mar and Oct–Dec
Carnation
Dec–Jan
Nov–Feb
Chrysanthemum
Nov–Dec
Feb–Mar and Oct–Dec
Anthurium
Oct
Mar–Apr and Jul–Oct
Orchids
Oct
Mar–Apr and Jul–Oct
Lilium
Dec–Jan
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.
₹5,903Spending per person per month, urban West Bengal, 2023–24[5]
190 kmto Kolkata, the nearest metro (straight line)
Urban households in West Bengal spent an average of ₹5,903 per person per month in 2023–24, below the all-India urban average of ₹7,078.[5] Asansol is large enough for steady local sales to restaurants, hotels and fruit-and-vegetable retailers. Start with a farm size that matches the orders you can confirm. For premium vegetable and flower buyers, Kolkata is within a day's delivery, about 190 km away.
Polyhouse farming in Asansol with Kryzen
We have built 2 projects in West Bengal so far (see our project map (opens in a new tab)). Asansol is about 1,270 km in a straight line from our Chhatrapati Sambhajinagar warehouse, our nearest site.
Towns near Asansol
We also plan and build farms in these towns near Asansol:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Asansol: FAQs
Can a polyhouse farm run all year in Asansol?
Yes, with the right structure. For Asansol we would plan a Fan & Pad polyhouse for leafy greens. Even then, lettuce is hard to grow in April to August, so plan another crop for those months.
Which polyhouse is best for Asansol?
With May highs of about 39°C and 54% 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 Asansol?
Going by the monthly climate, chilli pepper, capsicum and tomato have the longest growing windows. Confirm prices and volumes with buyers before you plant.
Is polyhouse farming profitable in Asansol?
It can be, if the crop, the structure and the buyers match. In Asansol, 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 Asansol?
Yes. Our nearest site is our Chhatrapati Sambhajinagar warehouse, about 1,270 km away, and we have built 2 projects in West Bengal.
Is there a subsidy for polyhouse or hydroponic farms in West Bengal?
Yes. Protected cultivation projects in West Bengal 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 Asansol 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.
