Safe to Plant

Shirley poppy · Modīnagar, Uttar Pradesh, India

When to sow shirley poppies in Modīnagar

Main outdoor window

9-30 Dec

The window this page is built around.

Timed from last spring frost

7 January

In Modīnagar, on your chosen risk.

Ready to pick

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 Modīnagar

Each window is a range, not a single day. Earlier in the range buys you a longer season; later in it buys you a safer one.

Sow direct

9-30 Dec

Four weeks before your last frost.

In flower

8-28 Feb

Frost tolerance
Hardy
Damaged below
-12°C (10.4°F)
Days to flowering
60–80
Hardy to
Zone 2a–10a
Min soil temp
5°C (41°F)
Spacing
20 cm
Sowing depth
2 mm (0.1 in)
Sun
Full

Shirley poppies through the year

Against the frost risk in Modīnagar

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Frost risk Sow direct Harvest Today

Why these dates

Sow direct four weeks before the last frost, on the surface with no covering - the seed needs light to germinate and disappears if raked in. Sowing onto snow or frosted ground works well and spaces the seed for you. It cannot be transplanted at any size, so sow where it is to flower.

Hardy to about -12C and germinates in cold soil, so it is a natural for autumn or late-winter sowing. Ends abruptly in the first real heat of summer.

Seed packets and extension guides express timing as weeks either side of the last spring frost, because that is the only reference point that travels. Shirley poppies are timed for direct sowing 4 weeks before it, and this page simply resolves those offsets against the frost date computed for Modīnagar.

Modīnagar sits in zone 10b, which is milder than this crop wants, and a winter that never really arrives is its own problem. The dates below still describe the right time of year; the open question is survival rather than timing.

The median frost-free season here is 356 days, against 60 to 80 days to first flower for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.

See every crop timed for Modīnagar →

Growing shirley poppies in Modīnagar

When should I plant shirley poppies in Modīnagar?

Aim for 9-30 Dec in an average year. If you would rather not gamble on the weather, wait until 10-31 Dec - by then frost has finished in nine years out of ten.

When will shirley poppies be ready to harvest in Modīnagar?

Expect to start picking around 8-28 Feb, based on 60 to 80 days to maturity from the planting date calculated for this location.

How much frost will shirley poppies tolerate?

Hardy to about -12C and germinates in cold soil, so it is a natural for autumn or late-winter sowing. Ends abruptly in the first real heat of summer.