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When to plant lettuce in Christchurch

Lettuce is cold-hardy, so every date keys off Christchurch's frost dates of Oct 10.
Step 1 · Sow
Start seeds indoors
Sep 12 – Oct 3
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Sep 19 – Oct 10
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Nov 3 – Nov 18
Picking runs until conditions turn against the crop.
Window
Days to maturity
45 – 60 d
Christchurch's 192-day season leaves this much room.
Lettuce on Christchurch's growing year
Frost-bounded season with crops mapped onto the 12-month axis.
Frost risk Growing Harvest
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
OCT 10
APR 20

Common questions

When can I sow lettuce outdoors in Christchurch?

Direct-sow around mid September (Sep 12–Oct 3) in Christchurch, based on its local frost dates. Confidence 80%.

When will lettuce be ready to harvest in Christchurch?

Expect to harvest from around early November (Nov 3–Nov 18) in Christchurch, based on its local frost dates. Confidence 72%.

When should I start lettuce seeds indoors in Christchurch?

Start seeds indoors around mid September (Sep 12–Oct 3) in Christchurch, based on its local frost dates. Confidence 76%.

When can I transplant lettuce outdoors in Christchurch?

Transplant outdoors around mid September (Sep 19–Oct 10) in Christchurch, based on its local frost dates. Confidence 80%.

How long is the growing season in Christchurch?

Christchurch has roughly 192 frost-free days, which is enough time to grow lettuce to maturity outdoors.

The rule of thumb

Sow lettuce as soon as the soil is workable — it tolerates cool weather and light frost. Every date on this page is derived from that rule and Christchurch's frost dates.

Confidence 80/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.
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