Planning polyhouse farming in Alappuzha? Alappuzha is a mid-sized city in Kerala, home to about 2.4 lakh people (GeoNames)[1][2], about 410 km from Bengaluru. We have used the monthly climate for Alappuzha 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 Alappuzha
March is the hottest month in Alappuzha, with average daily highs of about 31°C. January has the coolest nights, averaging 26°C.[3] The area gets about 2,710 mm of rain a year, most of it in April to November, peaking in June at about 475 mm. Average humidity stays at 75% or more in April to November, which raises the risk of leaf disease and slows evaporative cooling. Alappuzha sits about 25 m above sea level.[2] On the Köppen–Geiger climate map, Alappuzha falls in the tropical monsoon zone (Am).[4]
Alappuzha climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
29.9
25.5
66
16
Feb
30.9
26.4
65
33
Mar
31.3
27.3
69
67
Apr
30.6
27.9
76
146
May
29.8
27.9
80
302
Jun
28.5
26.8
84
475
Jul
27.6
25.8
87
410
Aug
27.5
25.6
87
336
Sep
27.8
25.9
85
302
Oct
28.3
26.2
82
377
Nov
28.9
26.3
77
199
Dec
29.5
25.9
70
47
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Alappuzha. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[3]
Advantages of protected cultivation in Alappuzha
1
Year-round crops
Under cover, cucumber can be grown for the whole year in Alappuzha, 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 June's 475 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 (April to November), so you spray less often.
5
Subsidy eligible
Polyhouse, shade net and nethouse projects in Kerala can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department.[5]
Which polyhouse suits Alappuzha?
For polyhouse farming in Alappuzha, the structure decides which months you can crop and what it costs to run. With average highs between 28°C and 31°C through the year, Alappuzha suits a naturally ventilated polyhouse for most crops. Fan & Pad cooling is rarely needed; spend the budget on good ventilation, insect net and a shade screen. Plan for heavy rain in June (about 475 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. A nethouse, the lowest-cost option, can grow hardy crops in December to March, when it is mild and fairly dry.
Crops for Alappuzha
Based on Alappuzha's climate, the crops with the longest growing windows are cucumber (all year), chilli pepper (10 months) and brinjal (10 months). Cucumber fits all year 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 Alappuzha.
Months each crop suits in Alappuzha
Crop
Naturally ventilated polyhouse
Capsicum
Jul–Feb
Tomato
Jan
Cucumber
All year
Chilli pepper
Jun–Mar
Brinjal
Jun–Mar
Lettuce
Difficult
Broccoli
Difficult
Strawberry
Difficult
Rose
Difficult
Gerbera
Difficult
Carnation
Difficult
Chrysanthemum
Difficult
Anthurium
Jun–Jan
Orchids
Jun–Jan
Lilium
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[6]
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.[6] Alappuzha 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 Alappuzha with Kryzen
Alappuzha is about 980 km in a straight line from our factory and master warehouse at Degaon, Wai (Satara), our nearest site.
Towns near Alappuzha
We also plan and build farms in these towns near Alappuzha:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Alappuzha: FAQs
Can a polyhouse farm run all year in Alappuzha?
Yes, with the right structure. For Alappuzha we would plan a naturally ventilated polyhouse. Even then, lettuce is hard to grow here at any time of year, so plan other crops instead.
Which polyhouse is best for Alappuzha?
With March highs of about 31°C and 69% average humidity in that month, we would start with a naturally ventilated polyhouse.
Which crops should I grow in a polyhouse in Alappuzha?
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 Alappuzha?
It can be, if the crop, the structure and the buyers match. In Alappuzha, 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 Alappuzha?
Yes. Our nearest site is our factory and master warehouse at Degaon, Wai (Satara), about 980 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 Alappuzha 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.
