When to plant sweet corn in Fukuoka
Sweet corn is frost-tender, so every date keys off Fukuoka's last spring frost of Apr 4.
Step 1 · Sow
Direct sow outdoors
May 10 – May 31
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Jul 9 – Aug 18
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 100 d
Fukuoka's 239-day season leaves this much room.
Sweet corn on Fukuoka'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
APR 4
NOV 30
Common questions
When can I sow sweet corn outdoors in Fukuoka?
Direct-sow around early May (May 10–May 31) in Fukuoka, based on its local frost dates. Confidence 44%.
When will sweet corn be ready to harvest in Fukuoka?
Expect to harvest from around early July (Jul 9–Aug 18) in Fukuoka, based on its local frost dates. Confidence 40%.
How long is the growing season in Fukuoka?
Fukuoka has roughly 239 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 Fukuoka's frost dates.
Confidence 45/100 · Curated · based on NASA POWER (modeled) 1991–2020 · frost dates are probabilities, not guarantees.