Planning polyhouse farming in Giridih? Giridih is a mid-sized city in Giridih district, Jharkhand, home to about 1.4 lakh people (Census 2011)[1], about 280 km from Kolkata. 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 Giridih
May is the hottest month in Giridih, with average daily highs of about 40°C. January has the coolest nights, averaging 8°C.[2] The area gets about 1,266 mm of rain a year, most of it in June to September, peaking in July at about 322 mm. Average humidity stays at 75% or more in July to October, which raises the risk of leaf disease and slows evaporative cooling. Giridih sits about 289 m above sea level.[1] On the Köppen–Geiger climate map, Giridih falls in the humid subtropical with dry winters zone (Cwa).[3]
Giridih climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
22.4
8.2
60
12
Feb
27.2
12.1
52
13
Mar
33.2
17.3
40
18
Apr
38.8
22.7
36
32
May
39.7
25.5
46
77
Jun
36.2
26.3
64
200
Jul
31.5
24.9
83
322
Aug
30.3
24.4
87
283
Sep
29.7
23.5
87
215
Oct
28.4
19.8
80
82
Nov
25.6
14.1
72
6
Dec
22.4
9.5
67
6
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Giridih. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[2]
Advantages of protected cultivation in Giridih
1
Year-round crops
Under cover, capsicum can be grown for 10 months a year in Giridih, 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 322 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 Jharkhand can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department.[4]
Which polyhouse suits Giridih?
For polyhouse farming in Giridih, the structure decides which months you can crop and what it costs to run. The heat in Giridih comes with dry air. In April to May, average highs reach 40°C while average humidity is only about 41%. In that dry air, wet pads can bring a 40°C May afternoon down to roughly 32°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 322 mm): raise the plinth, size the gutters for that month and keep drains away from the nutrient tank. Sunlight peaks in April at about 6.4 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 to March and October to November, when it is mild and fairly dry.
Crops for Giridih
Based on Giridih's climate, the crops with the longest growing windows are capsicum (10 months), tomato (10 months) and chilli pepper (10 months). Capsicum fits February to November with Fan & Pad cooling. These are the crops we would plan first for polyhouse farming in Giridih.
Months each crop suits in Giridih
Crop
Naturally ventilated polyhouse
With Fan & Pad cooling
Capsicum
Feb and Aug–Nov
Feb–Nov
Tomato
Feb and Aug–Dec
Feb–May and Jul–Dec
Cucumber
Mar and Jul–Nov
Mar–Nov
Chilli pepper
Feb and Jul–Nov
Feb–Nov
Brinjal
Jul–Nov
Mar–Nov
Lettuce
Nov–Feb
Aug–Apr
Broccoli
Dec–Jan
Nov–Mar
Strawberry
Dec–Jan
Nov–Feb
Rose
Feb and Nov–Dec
Feb–Mar and Oct–Dec
Gerbera
Feb and Nov–Dec
Feb–Apr and Sep–Dec
Carnation
Dec–Jan
Nov–Mar
Chrysanthemum
Feb and Nov–Dec
Feb–Mar and Oct–Dec
Anthurium
Sep–Oct
Mar–Apr and Jul–Oct
Orchids
Sep–Oct
Mar–Apr and Jul–Oct
Lilium
Dec–Jan
Nov–Mar
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.
₹5,455Spending per person per month, urban Jharkhand, 2023–24[5]
280 kmto Kolkata, the nearest metro (straight line)
Urban households in Jharkhand spent an average of ₹5,455 per person per month in 2023–24, below the all-India urban average of ₹7,078.[5] Local demand in Giridih may be small for exotic greens, so plan where the rest of the harvest goes. Dhanbad, about 50 km away, is the nearest larger market on our list.
Polyhouse farming in Giridih with Kryzen
We have built 2 projects in Jharkhand so far (see our project map (opens in a new tab)). Giridih is about 1,230 km in a straight line from our Chhatrapati Sambhajinagar warehouse, our nearest site.
Towns near Giridih
We also plan and build farms in these towns near Giridih:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Giridih: FAQs
Can a polyhouse farm run all year in Giridih?
Yes, with the right structure. For Giridih 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 Giridih?
With May highs of about 40°C and 46% 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 Giridih?
Going by the monthly climate, capsicum, tomato and chilli pepper have the longest growing windows. Confirm prices and volumes with buyers before you plant.
Is polyhouse farming profitable in Giridih?
It can be, if the crop, the structure and the buyers match. In Giridih, capsicum 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 Giridih?
Yes. Our nearest site is our Chhatrapati Sambhajinagar warehouse, about 1,230 km away, and we have built 2 projects in Jharkhand.
Is there a subsidy for polyhouse or hydroponic farms in Jharkhand?
Yes. Protected cultivation projects in Jharkhand 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 Giridih 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.
