When to plant kale in Christchurch

Kale is cold-hardy, so every date keys off Christchurch's frost dates of Oct 16.
Step 1 · Sow
Start seeds indoors
Sep 4 – Sep 25
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Sep 25 – Oct 16
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Nov 19 – Dec 9
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Feb 12 – Feb 26
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Apr 15 – May 5
Maturity window for the second sowing.
Window
Days to maturity
55 – 75 d
Christchurch's 211-day season leaves this much room.
Kale 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 16
MAY 19

Common questions

When can I sow kale outdoors in Christchurch?

Direct-sow around late September (Sep 25–Oct 16) in Christchurch, based on its local frost dates. Confidence 45%.

When will kale be ready to harvest in Christchurch?

Expect to harvest from around mid November (Nov 19–Dec 9) in Christchurch, based on its local frost dates. Confidence 40%.

When should I start kale seeds indoors in Christchurch?

Start seeds indoors around early September (Sep 4–Sep 25) in Christchurch, based on its local frost dates. Confidence 43%.

When can I transplant kale outdoors in Christchurch?

Transplant outdoors around late September (Sep 25–Oct 16) in Christchurch, based on its local frost dates. Confidence 45%.

Can I plant kale in autumn in Christchurch?

Yes — Christchurch supports a second, autumn sowing of kale around mid February (Feb 12–Feb 26), timed to mature before the first fall frost.

How long is the growing season in Christchurch?

Christchurch has roughly 211 frost-free days, which is enough time to grow kale to maturity outdoors.

The rule of thumb

Sow kale 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 45/100 · Curated · based on NASA POWER (modeled) 1991–2020 · frost dates are probabilities, not guarantees.