Growing Blueberries in Hashtsāl, Delhi, India: Winter Check

Step by step in Hashtsāl

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.

Frost tolerance

Very-hardy

Typical first crop

Year 2

Chill needed

800 hours

Hardy to

Zone 3a–8a

Spacing

120 cm

Sun

Full

Blueberries through the year

Against the frost risk in Hashtsāl

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

* Check winter suitability before planting Frost risk Today

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.

Jan 14 mm

Feb 20 mm

Mar 18 mm

Apr 16 mm

May 35 mm

Jun 71 mm

Jul 179 mm

Aug 175 mm

Sep 99 mm

Oct 11 mm

Nov 4 mm

Dec 7 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 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.

NASA POWER climate averages, 1995–2024
Month	Average low	Average high	Frost days
January	6.7°C (44.1°F)	22.3°C (72.1°F)	0.2
February	9.7°C (49.5°F)	26.5°C (79.6°F)	0.0
March	15.3°C (59.5°F)	32.8°C (91°F)	0.0
April	21.6°C (70.9°F)	39°C (102.3°F)	0.0
May	26.9°C (80.4°F)	42.4°C (108.3°F)	0.0
June	29.4°C (84.9°F)	41.8°C (107.2°F)	0.0
July	28.3°C (82.9°F)	37.6°C (99.6°F)	0.0
August	26.2°C (79.2°F)	34.7°C (94.5°F)	0.0
September	23.8°C (74.8°F)	34.5°C (94°F)	0.0
October	19.2°C (66.5°F)	33.4°C (92°F)	0.0
November	13.7°C (56.7°F)	28.8°C (83.9°F)	0.0
December	8.8°C (47.8°F)	24.1°C (75.4°F)	0.0

For blueberries, 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 blueberries for Hashtsāl

The coolest monthly mean is about 14.5°C. This is a warm-winter screening signal, not a measured chill-hour total. Confirm the exact cultivar with a local grower before buying; the dates below only describe the temperature model.
Blueberry types have different chill needs. A locally proven low-chill cultivar may behave differently from the generic crop rating, and acidic soil is still essential.
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 blueberries

Use the calendar to plan ahead, then check the conditions in your own garden.

Frost tolerance does not make saturated or frozen soil suitable for planting. Wait until the bed can be worked without smearing or compacting it.
Check the cultivar’s winter chill requirement with a local nursery. Hardiness zones measure winter cold, not chill hours; this site does not calculate a local chill-hour total.
Check mature size, drainage and cultivar suitability before choosing a permanent position. A suitable planting window does not guarantee long-term survival or fruiting.

Soil acidity and variety matter more than a planting date

A container of ericaceous compost is an option where soil is too alkaline. Keep the root zone moist but well drained, and use rainwater where possible if your tap water is alkaline.

Choose a variety for your region and check its winter-chill and pollination needs. Northern highbush requirements cannot be applied to every blueberry type; a generic hardiness rating does not settle the choice.

Plan for bird protection as fruit colours, while using netting safely and checking it regularly. Leave berries to ripen fully before picking; colour alone is not always the best guide to flavour.

Growing in a container

Use acidic ericaceous compost in a large pot with drainage. Container plants depend on you for consistent watering.

Further reading: RHS blueberry growing guide . General crop guidance; local dates on this site are calculated separately. Source checked 18 September 2026 by Safe to Plant; this is not an expert review.

How the dates are calculated and their limits · Keep a growing record · Report a local discrepancy

Why these dates

A container of ericaceous compost is an option where soil is too alkaline. Keep the root zone moist but well drained, and use rainwater where possible if your tap water is alkaline.

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.

Blueberries are planted once and then left in place, so there is no sowing offset to resolve. What matters in Hashtsāl is the shape of the year: this crop is dormant through the winter and is planted while it sleeps, any time between leaf fall in autumn and the restart of growth in spring, so long as the ground is neither frozen nor waterlogged. That is why the window below spans the cold months rather than sitting in the middle of the growing season.

Hashtsāl 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.

One caution specific to warm climates: this crop needs roughly 800 hours below 7.2°C (45°F) over winter before it will flower properly, and the coldest month in Hashtsāl averages 14.5°C (58.1°F). This site does not calculate local chill hours. Check the exact cultivar with a knowledgeable local nursery; a monthly average cannot establish that its chilling requirement is met.

The general establishment guide is around year 2, under suitable conditions. This is not a prediction for this location; cultivar, winter conditions and care determine whether it crops reliably.

See every crop timed for Hashtsāl →

Nearby

Blueberries in places close by

Bāprola 4 km Nāngloi Jāt 5 km Mūndka 6 km Sultan Pur Majra 6 km Kirāri Sulemānnagar 7 km Roshanpura 8 km

Also in Hashtsāl

Other fruits to time

Apples very hardy Strawberries hardy Pears very hardy Grapes hardy Plums very hardy Summer raspberries very hardy Oranges tender Sweet cherries very hardy Lemons tender Peaches hardy Autumn raspberries very hardy