When to plant sweet corn in Green Bay
Sweet corn is frost-tender, so every date keys off Green Bay's last spring frost of May 4.
Step 1 · Sow
Direct sow outdoors
Jun 7 – Jun 28
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Aug 6 – Sep 15
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 100 d
Green Bay's 152-day season leaves this much room.
Sweet corn on Green Bay'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
FROST
HARVEST
MAY 4
OCT 5
Common questions
When can I sow sweet corn outdoors in Green Bay?
Direct-sow around early June (Jun 7–Jun 28) in Green Bay, based on its local frost dates. Confidence 85%.
When will sweet corn be ready to harvest in Green Bay?
Expect to harvest from around early August (Aug 6–Sep 15) in Green Bay, based on its local frost dates. Confidence 79%.
How long is the growing season in Green Bay?
Green Bay has roughly 152 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 Green Bay's frost dates.
Confidence 88/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.