When to Plant Sweet williams in Mandoli, Delhi, India

Step by step in Mandoli

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

18 Feb - 18 Mar

Six weeks after your last frost.

Move to final position

27 May - 24 Jun

20 weeks after your last frost.

In flower

1 Jun - 31 Jul

Frost tolerance

Very-hardy

Damaged below

-20°C (-4°F)

Days to flowering

335–380

Hardy to

Zone 3a–9a

Min soil temp

15°C (59°F)

Spacing

25 cm

Sowing depth

5 mm (0.2 in)

Sun

Full

Sweet williams through the year

Against the frost risk in Mandoli

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sweet williams

Frost risk Sow direct Plant out Harvest Today

Seasonal context

Rainfall and the growing season in Mandoli

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.

Jan 16 mm

Feb 22 mm

Mar 18 mm

Apr 15 mm

May 34 mm

Jun 81 mm

Jul 217 mm

Aug 203 mm

Sep 120 mm

Oct 13 mm

Nov 4 mm

Dec 8 mm

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 Mandoli

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.

NASA POWER climate averages, 1995–2024
Month	Average low	Average high	Frost days
January	6.8°C (44.2°F)	22.3°C (72.1°F)	0.1
February	9.8°C (49.7°F)	26.5°C (79.7°F)	0.0
March	15.4°C (59.6°F)	32.9°C (91.2°F)	0.0
April	21.8°C (71.3°F)	39.3°C (102.7°F)	0.0
May	27°C (80.6°F)	42.6°C (108.6°F)	0.0
June	29.5°C (85°F)	41.9°C (107.4°F)	0.0
July	28°C (82.4°F)	37°C (98.6°F)	0.0
August	26.1°C (78.9°F)	34°C (93.2°F)	0.0
September	23.7°C (74.6°F)	33.7°C (92.7°F)	0.0
October	18.8°C (65.9°F)	32.6°C (90.6°F)	0.0
November	13.5°C (56.3°F)	28.5°C (83.3°F)	0.0
December	8.7°C (47.6°F)	23.9°C (75.1°F)	0.0

For sweet williams, 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 sweet williams for Mandoli

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 sweet williams

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.
Frost tolerance does not make saturated or frozen soil suitable for planting. Wait until the bed can be worked without smearing or compacting it.
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 whether your sweet William flowers in its first year

Provide a sunny, drained bed, with some protection from fierce afternoon heat where needed. Keep young plants growing steadily and avoid leaving crowns in wet soil. Space for the cultivar's mature size rather than the size of a small nursery plug.

Watch for slugs and damaged or rotting crowns during establishment. Remove spent flower heads according to whether you want further growth or seed. Record whether plants survived and flowered again; a short-lived perennial label should not be read as a promise of an indefinite display.

What to record this season

Did the named strain flower in its first season, and how many plants returned successfully? Add the cultivar, sowing date and conditions to your growing record so you can compare next season.

Further reading: NC State Extension: Dianthus barbatus . 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

Provide a sunny, drained bed, with some protection from fierce afternoon heat where needed. Keep young plants growing steadily and avoid leaving crowns in wet soil. Space for the cultivar's mature size rather than the size of a small nursery plug.

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. Sweet williams are timed with planting out 20 weeks after it, and this page simply resolves those offsets against the frost date computed for Mandoli.

Mandoli 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.

This is a two-season crop, so the dates above describe a sowing in one year and a flowering in the next. The plant spends the winter in the ground as a small rosette, which is why the frost-free season in Mandoli does not limit it the way it would limit a tomato: it is not trying to finish before the cold arrives, it is trying to be well enough rooted to sit through it. Sowing too late is the real risk, because a plant that goes into winter undersized often fails to flower at all the following year.

See every crop timed for Mandoli →

Nearby

Sweet williams in places close by

Ziauddin Pur 3 km Khajoori Khas 5 km Loni 6 km Sādatpur Gujran 7 km Delhi 10 km Gharroli 10 km

Also in Mandoli

Other flowers to time

Tulips very hardy Daffodils very hardy Dahlias tender Sunflowers tender Crocuses very hardy Peonies very hardy Calendulas hardy Hyacinths very hardy Sweet peas hardy Pansies very hardy Snowdrops very hardy Zinnias tender

Growing sweet williams in Mandoli

Can I grow sweet williams in Mandoli?

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 sweet williams in Mandoli?

Aim for 18 Feb - 18 Mar in an average year. If you would rather not gamble on the weather, wait until 18 Feb - 18 Mar - by then frost has finished in nine years out of ten.

When might sweet williams flower in Mandoli?

The estimated period is 1 Jun - 31 Jul, based on 335 to 380 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 sweet williams tolerate?