Planning polyhouse farming in Kamarhati? Kamarhati is a large city in North 24 Parganas district, West Bengal, home to about 3.3 lakh people (Census 2011)[1]. This guide works from Kamarhati'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 Kamarhati
April is the hottest month in Kamarhati, with average daily highs of about 38°C. January has the coolest nights, averaging 10°C.[2] The area gets about 1,567 mm of rain a year, most of it in May to October, peaking in July at about 333 mm. Average humidity stays at 75% or more in June to November, which raises the risk of leaf disease and slows evaporative cooling. Kamarhati sits about 15 m above sea level.[1] On the Köppen–Geiger climate map, Kamarhati falls in the tropical savanna (dry winter) zone (Aw).[3]
Kamarhati climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
24.4
10.2
65
13
Feb
29.6
14.5
57
20
Mar
34.9
19.8
55
31
Apr
38.1
24.3
60
50
May
36.9
26.2
67
144
Jun
33.1
26.7
80
231
Jul
31.2
26.1
87
333
Aug
30.7
25.8
89
308
Sep
30.2
25.2
89
259
Oct
29.7
22.4
84
146
Nov
27.2
16.6
78
23
Dec
24.1
11.4
74
9
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Kamarhati. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[2]
Advantages of protected cultivation in Kamarhati
1
Year-round crops
A polyhouse stretches the season: in Kamarhati cucumber can be grown for about 7 months a year under cover, longer than in the open field.
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 333 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 (June to November), 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 Kamarhati?
For polyhouse farming in Kamarhati, the structure decides which months you can crop and what it costs to run. In Kamarhati the heat comes with humidity: during March to June average humidity is about 66%. Wet pads cool much less in humid air: on a typical April afternoon they would only bring 38°C down to about 33°C. So we usually start with a tall naturally ventilated polyhouse with wide roof vents, insect net and a shade screen. A Fan & Pad polyhouse still makes sense if buyers need lettuce through the hottest months, but expect a smaller temperature drop than in dry inland towns.
Plan for heavy rain in July (about 333 mm): raise the plinth, size the gutters for that month and keep drains away from the nutrient tank. A nethouse, the lowest-cost option, can grow hardy crops in November to February, when it is mild and fairly dry.
Crops for Kamarhati
Based on Kamarhati's climate, the crops with the longest growing windows are cucumber (7 months), tomato (6 months) and chilli pepper (6 months). Cucumber fits February and June to November in a naturally ventilated polyhouse. Lilium and broccoli are hard to time here, so we would leave them out of the first season. These are the crops we would plan first for polyhouse farming in Kamarhati.
Months each crop suits in Kamarhati
Crop
Naturally ventilated polyhouse
With Fan & Pad cooling
Capsicum
Feb and Aug–Nov
Feb–Mar and Jul–Nov
Tomato
Sep–Feb
Sep–Mar
Cucumber
Feb and Jun–Nov
Feb–Nov
Chilli pepper
Feb and Jul–Nov
Feb–Nov
Brinjal
Feb and Jul–Nov
Feb–Nov
Lettuce
Nov–Jan
Oct–Mar
Broccoli
Difficult
Nov–Feb
Strawberry
Dec–Jan
Dec–Feb
Rose
Nov–Jan
Nov–Mar
Gerbera
Nov–Jan
Oct–Mar
Carnation
Dec–Jan
Nov–Feb
Chrysanthemum
Nov–Jan
Nov–Mar
Anthurium
Oct–Nov
Mar and Jun–Nov
Orchids
Oct–Nov
Mar and Jun–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.
₹5,903Spending per person per month, urban West Bengal, 2023–24[5]
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] Kamarhati 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.
Polyhouse farming in Kamarhati with Kryzen
We have built 2 projects in West Bengal so far (see our project map (opens in a new tab)). Kamarhati is about 1,390 km in a straight line from our Chhatrapati Sambhajinagar warehouse, our nearest site.
Towns near Kamarhati
We also plan and build farms in these towns near Kamarhati:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Kamarhati: FAQs
Can a polyhouse farm run all year in Kamarhati?
Yes, with the right structure. For Kamarhati we would plan a tall naturally ventilated polyhouse with wide vents and insect net. Even then, lettuce is hard to grow in April to September, so plan another crop for those months.
Which polyhouse is best for Kamarhati?
With April highs of about 38°C and 60% average humidity in that month, we would start with a tall naturally ventilated polyhouse with wide vents and insect net.
Which crops should I grow in a polyhouse in Kamarhati?
Going by the monthly climate, cucumber, chilli pepper and brinjal have the longest growing windows. Confirm prices and volumes with buyers before you plant.
Is polyhouse farming profitable in Kamarhati?
It can be, if the crop, the structure and the buyers match. In Kamarhati, cucumber and tomato 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 Kamarhati?
Yes. Our nearest site is our Chhatrapati Sambhajinagar warehouse, about 1,390 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 Kamarhati 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.
