Shirley poppy · Roshanpura, Delhi, India
When to plant shirley poppies in Roshanpura
Main outdoor window
10-31 Dec
A climate estimate. Check your soil, forecast and cultivar.
Timed from last spring frost
7 January
In Roshanpura, on your chosen risk.
First flowers
8-28 Feb
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 Roshanpura
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.
Sow direct
10-31 Dec
Four weeks before your last frost.
In flower
8-28 Feb
Shirley poppies through the year
Against the frost risk in Roshanpura
Seasonal context
Rainfall and the growing season in Roshanpura
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 Roshanpura
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 shirley poppies, 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 shirley poppies for Roshanpura
- 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 shirley poppies
Use the calendar to plan ahead, then check the conditions in your own garden.
- Measure the soil at sowing depth. Aim for at least 5°C (41°F); the calendar estimates soil warmth from air temperatures and cannot measure your bed.
- Frost tolerance does not make saturated or frozen soil suitable for planting. Wait until the bed can be worked without smearing or compacting it.
- 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.
Plan Shirley poppies as a self-sowing annual display
Choose a sunny, drained bed, with some relief from intense afternoon heat in hot conditions. Follow the seed supplier's sowing instructions and avoid crowding seedlings into a dense mat. Seedlings need moisture even where established poppies tolerate drier soil.
Decide whether to retain seed capsules or remove them. Allowed to ripen, they can supply future seedlings, including plants outside the intended patch; saved seed may not repeat every colour in a mixture. Label a small test sowing to compare the local season and colour result.
What to record this season
Which sowing produced the longest display, and where did unwanted seedlings appear? Add the cultivar, sowing date and conditions to your growing record so you can compare next season.
Further reading: NC State Extension: Papaver rhoeas . 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
Choose a sunny, drained bed, with some relief from intense afternoon heat in hot conditions. Follow the seed supplier's sowing instructions and avoid crowding seedlings into a dense mat. Seedlings need moisture even where established poppies tolerate drier soil.
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. Shirley poppies are timed for direct sowing 4 weeks before it, and this page simply resolves those offsets against the frost date computed for Roshanpura.
Roshanpura sits in zone 10b, which is above the catalog range. Confirm the exact cultivar locally; a zone number alone cannot measure summer heat or winter chill. The calculated dates do not confirm that this crop is suitable here. Check cultivar requirements and local growing experience before planting.
Also in Roshanpura
Other flowers to time
Growing shirley poppies in Roshanpura
Can I grow shirley poppies in Roshanpura?
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 shirley poppies in Roshanpura?
Aim for 10-31 Dec in an average year. If you would rather not gamble on the weather, wait until 16 Dec - 6 Jan - by then frost has finished in nine years out of ten.
When might shirley poppies flower in Roshanpura?
The estimated period is 8-28 Feb, based on 60 to 80 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 shirley poppies 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.