Safe to Plant

Butterhead lettuce · Lahore, Punjab, Pakistan

When to plant butterhead lettuce in Lahore

Main outdoor window

6-20 Jan

The window this page is built around.

Timed from last spring frost

27 January

In Lahore, on your chosen risk.

Ready to pick

1 May - 31 Oct

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 Lahore

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.

Start indoors

16-30 Dec

Six weeks before your last frost, under cover or on a windowsill.

Sow direct

6-20 Jan

Three weeks before your last frost.

Sow direct

13-27 Jan

Two weeks before your last frost.

Harvest

1 May - 31 Oct

Sow in succession. A single sowing gives you a single glut. Sow a short row every 10 days through the window above and you get a steady supply instead.
Frost tolerance
Half-hardy
Damaged below
-3°C (26.6°F)
Days to maturity
45–60
Min soil temp
4.5°C (40.1°F)
Spacing
25 cm
Sowing depth
6 mm (0.2 in)
Sun
Partial

Butterhead lettuce through the year

Against the frost risk in Lahore

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

Frost risk Start indoors Sow direct Plant out Harvest Today

Why these dates

Sow every ten days from six weeks before the last frost, then stop through the hottest weeks and resume eight weeks before the first autumn frost.

Damaged below about -3C. It is heat rather than cold that ends this crop, with seed germinating badly above 25C.

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. Butterhead lettuce are timed from 6 weeks before that frost for an indoor start, with planting out 2 weeks before it, and this page simply resolves those offsets against the frost date computed for Lahore.

See every crop timed for Lahore →

Growing butterhead lettuce in Lahore

When should I plant butterhead lettuce in Lahore?

Aim for 6-20 Jan in an average year. If you would rather not gamble on the weather, wait until 16-30 Jan - by then frost has finished in nine years out of ten.

When will butterhead lettuce be ready to harvest in Lahore?

Expect to start picking around 1 May - 31 Oct, based on 45 to 60 days to maturity from the planting date calculated for this location.

How much frost will butterhead lettuce tolerate?

Damaged below about -3C. It is heat rather than cold that ends this crop, with seed germinating badly above 25C.