Planning polyhouse farming in Thiruvalla? Thiruvalla is a town in Pathanamthitta district, Kerala, home to about 57,000 people (GeoNames)[1][2], about 410 km from Bengaluru. We have used the monthly climate for Thiruvalla to plan a structure, a growing system and a crop calendar, so you can compare them with your own plot and buyers.
Climate for polyhouse farming in Thiruvalla
March is the hottest month in Thiruvalla, with average daily highs of about 36°C. January has the coolest nights, averaging 20°C.[3] The area gets about 2,230 mm of rain a year, most of it in April to November, peaking in June at about 352 mm. Average humidity stays at 75% or more in May to December, which raises the risk of leaf disease and slows evaporative cooling. Thiruvalla sits about 27 m above sea level.[2] On the Köppen–Geiger climate map, Thiruvalla falls in the tropical monsoon zone (Am).[4]
Thiruvalla climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
31.3
19.8
74
15
Feb
34.6
20.8
64
26
Mar
36.1
22.8
64
59
Apr
34.6
24.3
74
125
May
31.6
24.7
84
250
Jun
29.3
24.0
89
352
Jul
28.4
23.4
91
302
Aug
28.5
23.2
91
256
Sep
29.0
23.1
89
252
Oct
29.5
23.0
89
348
Nov
29.6
22.3
87
198
Dec
29.6
20.8
83
47
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Thiruvalla, 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 Thiruvalla
1
ఏడాది పొడవునా పంటలు
A polyhouse stretches the season: in Thiruvalla 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 June's 352 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 Kerala can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department.[6]
Which polyhouse suits Thiruvalla?
For polyhouse farming in Thiruvalla, the structure decides which months you can crop and what it costs to run. In Thiruvalla the heat comes with humidity: during February to April average humidity is about 67%. Wet pads cool much less in humid air: on a typical March afternoon they would only bring 36°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 June (about 352 mm): raise the plinth, size the gutters for that month and keep drains away from the nutrient tank. Sunlight peaks in March at about 6.4 kWh per m² a day, so add a shade screen for leafy greens in the brightest months.
Crops for Thiruvalla
Based on Thiruvalla's climate, the crops with the longest growing windows are cucumber (9 months), chilli pepper (9 months) and brinjal (9 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 Thiruvalla.
Months each crop suits in Thiruvalla
పంట
సహజ వెంటిలేషన్ పాలీహౌస్
With Fan & Pad cooling
క్యాప్సికమ్
Jun–Dec
All year
టమాటా
Jun–Dec
All year
దోసకాయ
May–Jan
All year
Chilli pepper
May–Jan
All year
వంకాయ
May–Jan
All year
లెట్యూస్
Difficult
Jun–Jan
బ్రోకలీ
Difficult
Difficult
స్ట్రాబెర్రీ
Difficult
Difficult
గులాబీ
Difficult
Dec–Jan
గెర్బెరా
Difficult
Jul–Jan
కార్నేషన్
Difficult
Difficult
చామంతి
Difficult
Dec–Jan
ఆంథూరియం
Jun–Dec
All year
ఆర్కిడ్లు
Jun–Dec
All year
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.
₹7,834Spending per person per month, urban Kerala, 2023–24[7]
410 kmto Bengaluru, the nearest metro (straight line)
Urban households in Kerala spent an average of ₹7,834 per person per month in 2023–24, above the all-India urban average of ₹7,078.[7] Local demand in Thiruvalla may be small for exotic greens, so plan where the rest of the harvest goes.
Polyhouse farming in Thiruvalla with Kryzen
Thiruvalla is about 1,000 km in a straight line from our factory and master warehouse at Degaon, Wai (Satara), our nearest site.
Towns near Thiruvalla
We also plan and build farms in these towns near Thiruvalla:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Thiruvalla: FAQs
Can a polyhouse farm run all year in Thiruvalla?
Yes, with the right structure. For Thiruvalla 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 Thiruvalla?
With March highs of about 36°C and 64% 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 Thiruvalla?
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 Thiruvalla?
It can be, if the crop, the structure and the buyers match. In Thiruvalla, 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 Thiruvalla?
Yes. Our nearest site is our factory and master warehouse at Degaon, Wai (Satara), about 1,000 km away.
Is there a subsidy for polyhouse or hydroponic farms in Kerala?
Yes. Protected cultivation projects in Kerala 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 Thiruvalla 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.
