When to plant cabbage in Christchurch
Cabbage is cold-hardy, so every date keys off Christchurch's frost dates of Oct 10.
Step 1 · Sow
Start seeds indoors
Aug 29 – Sep 19
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 28 – Dec 28
Picking runs until conditions turn against the crop.
Window
Days to maturity
70 – 100 d
Christchurch's 192-day season leaves this much room.
Cabbage 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
FROST
OCT 10
APR 20
Common questions
When will cabbage be ready to harvest in Christchurch?
Expect to harvest from around late November (Nov 28–Dec 28) in Christchurch, based on its local frost dates. Confidence 72%.
When should I start cabbage seeds indoors in Christchurch?
Start seeds indoors around late August (Aug 29–Sep 19) in Christchurch, based on its local frost dates. Confidence 76%.
When can I transplant cabbage 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 cabbage to maturity outdoors.
The rule of thumb
Sow cabbage 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.