Planning polyhouse farming in Viswanatham? Viswanatham is a small town in Tamil Nadu, home to about 26,000 people (GeoNames)[1][2], about 390 km from Bengaluru. This guide works from Viswanatham'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 Viswanatham
March is the hottest month in Viswanatham, with average daily highs of about 37°C. January has the coolest nights, averaging 18°C.[3] The area gets about 1,323 mm of rain a year, most of it in May to November, peaking in October at about 252 mm. Average humidity stays at 75% or more in May to December, which raises the risk of leaf disease and slows evaporative cooling. On the Köppen–Geiger climate map, Viswanatham falls in the tropical savanna (dry summer) zone (As).[4]
Viswanatham climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
31.0
18.3
74
11
Feb
34.2
19.4
63
17
Mar
36.7
22.1
58
39
Apr
36.3
23.8
66
81
May
33.8
23.8
76
148
Jun
31.2
22.9
81
142
Jul
30.7
22.3
80
131
Aug
30.9
22.0
81
120
Sep
31.1
21.9
82
147
Oct
30.3
22.0
85
252
Nov
29.0
21.2
87
186
Dec
28.8
19.5
84
49
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Viswanatham, adjusted for the town's elevation[5]. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[3]
Advantages of protected cultivation in Viswanatham
1
ఏడాది పొడవునా పంటలు
A polyhouse stretches the season: in Viswanatham cucumber can be grown for about 9 months a year under cover, longer than in the open field.
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 October's 252 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 (May to December), so you spray less often.
5
సబ్సిడీకి అర్హం
Polyhouse, shade net and nethouse projects in Tamil Nadu can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department.[6]
Which polyhouse suits Viswanatham?
For polyhouse farming in Viswanatham, the structure decides which months you can crop and what it costs to run. In Viswanatham the heat comes with humidity: during February to May average humidity is about 66%. Wet pads cool much less in humid air: on a typical March afternoon they would only bring 37°C down to about 32°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 October (about 252 mm): raise the plinth, size the gutters for that month and keep drains away from the nutrient tank. Sunlight peaks in March at about 6.3 kWh per m² a day, so add a shade screen for leafy greens in the brightest months.
Crops for Viswanatham
Based on Viswanatham's climate, the crops with the longest growing windows are cucumber (9 months), chilli pepper (8 months) and brinjal (8 months). Cucumber fits May to January in a naturally ventilated polyhouse. Lilium and chrysanthemum 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 Viswanatham.
Months each crop suits in Viswanatham
పంట
సహజ వెంటిలేషన్ పాలీహౌస్
With Fan & Pad cooling
క్యాప్సికమ్
Oct–Jan and Jul–Aug
All year
టమాటా
Oct–Jan and Jul–Aug
All year
దోసకాయ
May–Jan
All year
Chilli pepper
Jun–Jan
All year
వంకాయ
Jun–Jan
All year
లెట్యూస్
Difficult
Jun–Jan
బ్రోకలీ
Difficult
Difficult
స్ట్రాబెర్రీ
Difficult
Difficult
గులాబీ
Difficult
Nov–Jan
గెర్బెరా
Difficult
Jun–Jan
కార్నేషన్
Difficult
Difficult
చామంతి
Difficult
Nov–Jan
ఆంథూరియం
Nov–Dec
May–Mar
ఆర్కిడ్లు
Nov–Dec
May–Mar
లిలియం
Difficult
Difficult
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.
₹8,325Spending per person per month, urban Tamil Nadu, 2023–24[7]
390 kmto Bengaluru, the nearest metro (straight line)
Urban households in Tamil Nadu spent an average of ₹8,325 per person per month in 2023–24, above the all-India urban average of ₹7,078.[7] Local demand in Viswanatham may be small for exotic greens, so plan where the rest of the harvest goes.
Polyhouse farming in Viswanatham with Kryzen
We have built 9 projects in Tamil Nadu so far (see our project map (కొత్త ట్యాబ్లో తెరుచుకుంటుంది)). Viswanatham is about 1,040 km in a straight line from our factory and master warehouse at Degaon, Wai (Satara), our nearest site.
Towns near Viswanatham
We also plan and build farms in these towns near Viswanatham:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Viswanatham: FAQs
Can a polyhouse farm run all year in Viswanatham?
Yes, with the right structure. For Viswanatham we would plan a tall naturally ventilated polyhouse with wide vents and insect net. Even then, lettuce is hard to grow in February to May, so plan another crop for those months.
Which polyhouse is best for Viswanatham?
With March highs of about 37°C and 58% 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 Viswanatham?
Going by the monthly climate, capsicum, tomato and cucumber have the longest growing windows. Confirm prices and volumes with buyers before you plant.
Is polyhouse farming profitable in Viswanatham?
It can be, if the crop, the structure and the buyers match. In Viswanatham, cucumber and chilli pepper 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 Viswanatham?
Yes. Our nearest site is our factory and master warehouse at Degaon, Wai (Satara), about 1,040 km away, and we have built 9 projects in Tamil Nadu.
Is there a subsidy for polyhouse or hydroponic farms in Tamil Nadu?
Yes. Protected cultivation projects in Tamil Nadu 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 Viswanatham 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.
