When to plant eggplant in Christchurch
Eggplant is frost-tender, so every date keys off Christchurch's last spring frost of Oct 10.
Step 1 · Sow
Start seeds indoors
Aug 15 – Sep 5
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Oct 24 – Nov 14
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jan 2 – Jan 17
Picking runs until conditions turn against the crop.
Window
Days to maturity
70 – 85 d
Christchurch's 192-day season leaves this much room.
Eggplant 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 eggplant be ready to harvest in Christchurch?
Expect to harvest from around early January (Jan 2–Jan 17) in Christchurch, based on its local frost dates. Confidence 72%.
When should I start eggplant seeds indoors in Christchurch?
Start seeds indoors around mid August (Aug 15–Sep 5) in Christchurch, based on its local frost dates. Confidence 76%.
When can I transplant eggplant outdoors in Christchurch?
Transplant outdoors around late October (Oct 24–Nov 14) 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 eggplant to maturity outdoors.
The rule of thumb
Sow eggplant 6–8 weeks before your last spring frost; plant out 2–3 weeks after it. 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.