Water chestnut · New Delhi, Delhi, India
When to plant water chestnuts in New Delhi
Main outdoor window
21 Jan - 11 Feb
A climate estimate. Check your soil, forecast and cultivar.
Timed from last spring frost
7 January
In New Delhi, on your chosen risk.
Ready to pick
1 Oct - 31 Dec
If you plant at the start of the window.
The average last frost. Half of all years are later than this.
Step by step in New Delhi
Download these planting dates (.ics)
Import into Apple Calendar, Google Calendar or Outlook. Dates use the selected risk level and are planning estimates, not frost alerts.
Each window is a planning range. Check the forecast, soil and cultivar before planting; a later date is not automatically safer in hot or wet conditions.
Plant corms
21 Jan - 11 Feb
Two weeks after your last frost.
Harvest
1 Oct - 31 Dec
Water chestnuts through the year
Against the frost risk in New Delhi
Seasonal context
Rainfall and the growing season in New Delhi
July has the highest average precipitation (217 mm); November has the lowest (4 mm). Compare this pattern with the planting windows and your water supply.
During wetter months, check that beds and containers drain after heavy rain. During drier months, plan how you will keep seeds and new transplants watered. Monthly averages can hide long dry spells and intense storms; they do not show soil moisture, humidity or this week's weather.
Source: NASA POWER, corrected MERRA-2 precipitation, 2001–2020. Values are approximate monthly totals, including the water equivalent of snow, from the nearest 0.5° × 0.625° grid cell. This reference period differs from the temperature record. Rainfall provides context and does not change the calculated planting dates. Method and limitations.
Monthly growing conditions in New Delhi
Compare the planting window with the local temperature pattern. These are historical monthly averages, not this year's forecast or measured soil temperatures. Average frost days do not tell you whether a particular night will freeze.
| Month | Average low | Average high | Frost days |
|---|---|---|---|
| January | 6.8°C (44.2°F)44.2°F (6.8°C) | 22.3°C (72.1°F)72.1°F (22.3°C) | 0.1 |
| February | 9.8°C (49.7°F)49.7°F (9.8°C) | 26.5°C (79.7°F)79.7°F (26.5°C) | 0.0 |
| March | 15.4°C (59.6°F)59.6°F (15.4°C) | 32.9°C (91.2°F)91.2°F (32.9°C) | 0.0 |
| April | 21.8°C (71.3°F)71.3°F (21.8°C) | 39.3°C (102.7°F)102.7°F (39.3°C) | 0.0 |
| May | 27°C (80.6°F)80.6°F (27°C) | 42.6°C (108.6°F)108.6°F (42.6°C) | 0.0 |
| June | 29.5°C (85°F)85°F (29.5°C) | 41.9°C (107.4°F)107.4°F (41.9°C) | 0.0 |
| July | 28°C (82.4°F)82.4°F (28°C) | 37°C (98.6°F)98.6°F (37°C) | 0.0 |
| August | 26.1°C (78.9°F)78.9°F (26.1°C) | 34°C (93.2°F)93.2°F (34°C) | 0.0 |
| September | 23.7°C (74.6°F)74.6°F (23.7°C) | 33.7°C (92.7°F)92.7°F (33.7°C) | 0.0 |
| October | 18.8°C (65.9°F)65.9°F (18.8°C) | 32.6°C (90.6°F)90.6°F (32.6°C) | 0.0 |
| November | 13.5°C (56.3°F)56.3°F (13.5°C) | 28.5°C (83.3°F)83.3°F (28.5°C) | 0.0 |
| December | 8.7°C (47.6°F)47.6°F (8.7°C) | 23.9°C (75.1°F)75.1°F (23.9°C) | 0.0 |
For water chestnuts, also check drainage, sunlight and cultivar requirements. See the rainfall context above; humidity, irrigation and local pest pressure are not calculated.
Local growing check
Before choosing water chestnuts for New Delhi
- July is the wettest month in the rainfall grid, averaging about 217 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.
The temperature and rainfall tables on this page show the underlying climate estimates. How these suitability checks work · Record what happens in your garden.
Before you plant water chestnuts
Use the calendar to plan ahead, then check the conditions in your own garden.
- Measure the soil at sowing depth. Aim for at least 15°C (59°F); the calendar estimates soil warmth from air temperatures and cannot measure your bed.
- Check the local overnight forecast before planting out. Delay planting or keep protection ready if frost is forecast, even after the historical last-frost date.
- Harden off plants raised indoors: gradually expose them to outdoor light, wind and temperature before their final move into the bed.
- Use the maturity range on your seed packet when choosing a variety. Cold, short days and transplant stress can make harvest later than the calendar estimate.
Allow a long warm season for Chinese water-chestnut corms
Use a contained, sunny system with suitable soil and clean water. The crop needs a long warm growing period; green shoots alone do not prove that harvestable corms will form before cold weather.
Plan how water will be managed and how corms will be lifted without contaminating or damaging them. Assess a sample near the end of the season and retain sound planting stock under appropriate frost-free conditions if growing again.
What to record this season
Did the season produce corms of useful size, and could they be harvested cleanly? Add the cultivar, sowing date and conditions to your growing record so you can compare next season.
Further reading: Plants For A Future: Eleocharis dulcis . General crop guidance; local dates on this site are calculated separately. Source checked 19 September 2026 by Safe to Plant; this is not an expert review.
Plants For A Future compiles botanical and cultivation references. This is general species guidance, not a local field trial or evidence that every cultivar will crop in your climate.
How the dates are calculated and their limits · Keep a growing record · Report a local discrepancy
Why these dates
Use a contained, sunny system with suitable soil and clean water. The crop needs a long warm growing period; green shoots alone do not prove that harvestable corms will form before cold weather.
Check the named variety and local forecast before exposing young growth. The catalog cold-damage figure is a reference, not a guarantee: plant age, acclimatisation, wind and the duration of a freeze affect damage.
This calendar uses frost-relative offsets as a starting point. Water chestnuts are timed with planting out 2 weeks after it, and this page simply resolves those offsets against the frost date computed for New Delhi.
Nearby
Water chestnuts in places close by
Also in New Delhi
Other vegetables to time
Growing water chestnuts in New Delhi
Can I grow water chestnuts in New Delhi?
The calendar estimates a planting window, not a guarantee of success. July is the wettest month in the rainfall grid, averaging about 217 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.
When should I plant water chestnuts in New Delhi?
Aim for 21 Jan - 11 Feb in an average year. If you would rather not gamble on the weather, wait until 21 Jan - 11 Feb - by then frost has finished in nine years out of ten.
When might water chestnuts be ready to harvest in New Delhi?
The estimated period is 1 Oct - 31 Dec, based on 180 to 220 days from the modeled planting date. Cultivar, planting material and growing conditions can change this interval; check the plant as well as the calendar.
How much frost will water chestnuts tolerate?
Check the named variety and local forecast before exposing young growth. The catalog cold-damage figure is a reference, not a guarantee: plant age, acclimatisation, wind and the duration of a freeze affect damage.