When to plant summer squash / zucchini in Fukuoka
Summer squash / Zucchini is frost-tender, so every date keys off Fukuoka's last spring frost of Apr 4.
Step 1 · Sow
Start seeds indoors
Mar 28 – Apr 18
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
May 10 – May 31
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 24 – Jul 9
Picking runs until conditions turn against the crop.
Window
Days to maturity
45 – 60 d
Fukuoka's 239-day season leaves this much room.
Summer squash / Zucchini 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
APR 4
NOV 30
Common questions
When can I sow summer squash / zucchini outdoors in Fukuoka?
Direct-sow around early May (May 10–May 31) in Fukuoka, based on its local frost dates. Confidence 44%.
When will summer squash / zucchini be ready to harvest in Fukuoka?
Expect to harvest from around late June (Jun 24–Jul 9) in Fukuoka, based on its local frost dates. Confidence 40%.
When should I start summer squash / zucchini seeds indoors in Fukuoka?
Start seeds indoors around late March (Mar 28–Apr 18) in Fukuoka, based on its local frost dates. Confidence 43%.
When can I transplant summer squash / zucchini outdoors in Fukuoka?
Transplant outdoors around early May (May 10–May 31) in Fukuoka, based on its local frost dates. Confidence 44%.
How long is the growing season in Fukuoka?
Fukuoka has roughly 239 frost-free days, which is enough time to grow summer squash / zucchini to maturity outdoors.
The rule of thumb
Sow summer squash / zucchini 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.