Planning polyhouse farming in Ranchi? Ranchi is a city of about 10.7 lakh people (Census 2011) in Ranchi district, Jharkhand[1], about 320 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 Ranchi
May is the hottest month in Ranchi, with average daily highs of about 39°C. January has the coolest nights, averaging 8°C.[2] The area gets about 1,323 mm of rain a year, most of it in June to September, peaking in July at about 349 mm. Average humidity stays at 75% or more in July to October, which raises the risk of leaf disease and slows evaporative cooling. Ranchi sits about 651 m above sea level.[1] On the Köppen–Geiger climate map, Ranchi falls in the humid subtropical with dry winters zone (Cwa).[3]
Ranchi climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
22.2
7.6
54
15
Feb
26.7
11.2
46
17
Mar
32.1
16.2
36
22
Apr
37.5
21.6
30
25
May
39.1
24.3
39
53
Jun
34.8
24.6
62
208
Jul
29.4
23.0
85
349
Aug
28.3
22.6
89
312
Sep
27.8
21.7
88
226
Oct
26.5
17.9
80
82
Nov
23.9
12.8
70
6
Dec
21.7
8.7
62
8
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Ranchi. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[2]
Advantages of protected cultivation in Ranchi
1
ఏడాది పొడవునా పంటలు
Under cover, tomato can be grown for 10 months a year in Ranchi, so you can supply buyers every week instead of one open-field season.
2
మెరుగైన దిగుబడి మరియు ధర
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
తక్కువ నీరు
Drip irrigation under cover uses less water than flood irrigation, and the roof keeps July's 349 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
సబ్సిడీకి అర్హం
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 Ranchi?
For polyhouse farming in Ranchi, the structure decides which months you can crop and what it costs to run. Average highs stay at 33°C or more in April to June, with moderate humidity of about 44%. In that dry air, wet pads can bring a 39°C May afternoon down to roughly 30°C inside a Fan & Pad polyhouse, which keeps herbs and vine crops going; lettuce will still struggle in the hottest weeks. Capsicum, cucumber and tomato do well in a naturally ventilated polyhouse with a shade screen. If you want one structure, decide by crop: greens all year point to Fan & Pad; vine crops point to a naturally ventilated house.
Plan for heavy rain in July (about 349 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 to March and October, when it is mild and fairly dry.
Crops for Ranchi
Based on Ranchi's climate, the crops with the longest growing windows are tomato (10 months), lettuce (10 months) and capsicum (9 months). Tomato fits February to November with Fan & Pad cooling. These are the crops we would plan first for polyhouse farming in Ranchi.
Months each crop suits in Ranchi
పంట
సహజ వెంటిలేషన్ పాలీహౌస్
With Fan & Pad cooling
క్యాప్సికమ్
Jul–Nov
Mar–Nov
టమాటా
Feb and Jul–Nov
Feb–Nov
దోసకాయ
Mar and Jul–Oct
Mar–Oct
Chilli pepper
Mar and Jul–Nov
Mar–Nov
వంకాయ
Mar and Jul–Oct
Mar–Oct
లెట్యూస్
Sep–Feb
Jul–Apr
బ్రోకలీ
Nov–Jan
Nov–Mar
స్ట్రాబెర్రీ
Nov–Jan
Nov–Feb
గులాబీ
Feb and Oct–Nov
Feb–Mar and Oct–Nov
గెర్బెరా
Feb and Sep–Nov
Feb–Apr and Jul–Nov
కార్నేషన్
Nov–Jan
Nov–Mar
చామంతి
Feb and Oct–Nov
Feb–Mar and Oct–Nov
ఆంథూరియం
Jul–Oct
Mar–Oct
ఆర్కిడ్లు
Jul–Oct
Mar–Oct
లిలియం
Nov–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]
320 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] A city of this size has hotels, restaurants, modern retail and quick-commerce stores within its own limits, so most harvests can be sold locally. Line up two or three buyers before planting and agree on grade and delivery days.
Polyhouse farming in Ranchi with Kryzen
We have built 2 projects in Jharkhand so far (see our project map (కొత్త ట్యాబ్లో తెరుచుకుంటుంది)). Ranchi is about 1,100 km in a straight line from our Chhatrapati Sambhajinagar warehouse, our nearest site.
Towns near Ranchi
We also plan and build farms in these towns near Ranchi:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Ranchi: FAQs
Can a polyhouse farm run all year in Ranchi?
Yes, with the right structure. For Ranchi we would plan Fan & Pad cooling for leafy greens and a naturally ventilated polyhouse for vine crops. Even then, lettuce is hard to grow in May to June, so plan another crop for those months.
Which polyhouse is best for Ranchi?
With May highs of about 39°C and 39% average humidity in that month, we would start with Fan & Pad cooling for leafy greens and a naturally ventilated polyhouse for vine crops.
Which crops should I grow in a polyhouse in Ranchi?
Going by the monthly climate, tomato, lettuce and capsicum have the longest growing windows. Confirm prices and volumes with buyers before you plant.
Is polyhouse farming profitable in Ranchi?
It can be, if the crop, the structure and the buyers match. In Ranchi, tomato and lettuce 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 Ranchi?
Yes. Our nearest site is our Chhatrapati Sambhajinagar warehouse, about 1,100 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 Ranchi 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.
