When to plant sweet corn in Dunedin
Sweet corn is frost-tender, so every date keys off Dunedin's last spring frost of Oct 18.
Step 1 · Sow
Direct sow outdoors
Oct 25 – Nov 15
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Dec 24 – Feb 2
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 100 d
Dunedin's 178-day season leaves this much room.
Sweet corn on Dunedin'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 18
APR 14
Common questions
When can I sow sweet corn outdoors in Dunedin?
Direct-sow around late October (Oct 25–Nov 15) in Dunedin, based on its local frost dates. Confidence 68%.
When will sweet corn be ready to harvest in Dunedin?
Expect to harvest from around late December (Dec 24–Feb 2) in Dunedin, based on its local frost dates. Confidence 61%.
How long is the growing season in Dunedin?
Dunedin has roughly 178 frost-free days, which is enough time to grow sweet corn to maturity outdoors.
The rule of thumb
Sow sweet corn 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 Dunedin's frost dates.
Confidence 68/100 · NASA POWER (modeled) · 1991–2020 · frost dates are probabilities, not guarantees.