When to plant tomato in Auckland
Tomato is frost-tender, so every date keys off Auckland's last spring frost of Aug 20.
Step 1 · Sow
Start seeds indoors
Jul 9 – Jul 30
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Aug 27 – Sep 17
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Oct 26 – Nov 20
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 85 d
Auckland's 294-day season leaves this much room.
Tomato on Auckland'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
AUG 20
JUN 10
Common questions
When will tomato be ready to harvest in Auckland?
Expect to harvest from around late October (Oct 26–Nov 20) in Auckland, based on its local frost dates. Confidence 74%.
When should I start tomato seeds indoors in Auckland?
Start seeds indoors around early July (Jul 9–Jul 30) in Auckland, based on its local frost dates. Confidence 78%.
When can I transplant tomato outdoors in Auckland?
Transplant outdoors around late August (Aug 27–Sep 17) in Auckland, based on its local frost dates. Confidence 82%.
How long is the growing season in Auckland?
Auckland has roughly 294 frost-free days, which is enough time to grow tomato to maturity outdoors.
The rule of thumb
Sow tomato 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 Auckland's frost dates.
Confidence 82/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.