Shiso · Hashtsāl, Delhi, India
When to plant shiso in Hashtsāl
Main outdoor window
14 Jan - 4 Feb
A climate estimate. Check your soil, forecast and cultivar.
Timed from last spring frost
7 January
In Hashtsāl, on your chosen risk.
Ready to pick
1-21 Apr
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 Hashtsāl
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.
Start indoors
26 Nov - 17 Dec
Six weeks before your last frost, under cover or on a windowsill.
Sow direct
14 Jan - 4 Feb
One week after your last frost.
Plant out
21 Jan - 11 Feb
Two weeks after your last frost.
Harvest
1-21 Apr
Shiso through the year
Against the frost risk in Hashtsāl
Seasonal context
Rainfall and the growing season in Hashtsāl
July has the highest average precipitation (179 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 Hashtsāl
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 | 6.7°C (44.1°F)44.1°F (6.7°C) | 22.3°C (72.1°F)72.1°F (22.3°C) | 0.2 |
| February | 9.7°C (49.5°F)49.5°F (9.7°C) | 26.5°C (79.6°F)79.6°F (26.5°C) | 0.0 |
| March | 15.3°C (59.5°F)59.5°F (15.3°C) | 32.8°C (91°F)91°F (32.8°C) | 0.0 |
| April | 21.6°C (70.9°F)70.9°F (21.6°C) | 39°C (102.3°F)102.3°F (39°C) | 0.0 |
| May | 26.9°C (80.4°F)80.4°F (26.9°C) | 42.4°C (108.3°F)108.3°F (42.4°C) | 0.0 |
| June | 29.4°C (84.9°F)84.9°F (29.4°C) | 41.8°C (107.2°F)107.2°F (41.8°C) | 0.0 |
| July | 28.3°C (82.9°F)82.9°F (28.3°C) | 37.6°C (99.6°F)99.6°F (37.6°C) | 0.0 |
| August | 26.2°C (79.2°F)79.2°F (26.2°C) | 34.7°C (94.5°F)94.5°F (34.7°C) | 0.0 |
| September | 23.8°C (74.8°F)74.8°F (23.8°C) | 34.5°C (94°F)94°F (34.5°C) | 0.0 |
| October | 19.2°C (66.5°F)66.5°F (19.2°C) | 33.4°C (92°F)92°F (33.4°C) | 0.0 |
| November | 13.7°C (56.7°F)56.7°F (13.7°C) | 28.8°C (83.9°F)83.9°F (28.8°C) | 0.0 |
| December | 8.8°C (47.8°F)47.8°F (8.8°C) | 24.1°C (75.4°F)75.4°F (24.1°C) | 0.0 |
For shiso, 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 shiso for Hashtsāl
- July is the wettest month in the rainfall grid, averaging about 179 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 shiso
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.
Check local restrictions and prevent unwanted seed spread
Use a sunny or partly shaded position with enough room to pick leaves. Perilla can self-seed heavily and is invasive in some regions; check local guidance before planting, particularly beside natural areas or pasture.
Pinch growing tips for branching and remove flower heads before seed develops where spread is unwanted. Keep it away from livestock access: perilla can be toxic to cattle. That pasture risk is separate from the plant's established use as a culinary herb.
What to record this season
Did the selected variety stay manageable, and were any seedlings found beyond the bed? Add the cultivar, sowing date and conditions to your growing record so you can compare next season.
Further reading: NC State Extension: Perilla frutescens . 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.
The reference describes plant identity and cultivation. Its regional calendar months and hardiness observations do not validate the calculated dates for another location.
How the dates are calculated and their limits · Keep a growing record · Report a local discrepancy
Why these dates
Use a sunny or partly shaded position with enough room to pick leaves. Perilla can self-seed heavily and is invasive in some regions; check local guidance before planting, particularly beside natural areas or pasture.
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. Shiso are timed from 6 weeks before that frost for an indoor start, with planting out 2 weeks after it, and this page simply resolves those offsets against the frost date computed for Hashtsāl.
Nearby
Shiso in places close by
Growing shiso in Hashtsāl
Can I grow shiso in Hashtsāl?
The calendar estimates a planting window, not a guarantee of success. July is the wettest month in the rainfall grid, averaging about 179 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 shiso in Hashtsāl?
Aim for 14 Jan - 4 Feb in an average year. If you would rather not gamble on the weather, wait until 20 Jan - 10 Feb - by then frost has finished in nine years out of ten.
When might shiso be ready to harvest in Hashtsāl?
The estimated period is 1-21 Apr, based on 70 to 90 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 shiso 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.