When to plant broccoli in Fukuoka
Broccoli is cold-hardy, so every date keys off Fukuoka's frost dates of Apr 4.
Step 1 · Sow
Start seeds indoors
Feb 21 – Mar 14
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 21 – Apr 11
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 20 – Jun 14
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Aug 16 – Aug 30
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Oct 22 – Nov 16
Maturity window for the second sowing.
Window
Days to maturity
60 – 85 d
Fukuoka's 239-day season leaves this much room.
Broccoli 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 will broccoli be ready to harvest in Fukuoka?
Expect to harvest from around mid May (May 20–Jun 14) in Fukuoka, based on its local frost dates. Confidence 40%.
When should I start broccoli seeds indoors in Fukuoka?
Start seeds indoors around late February (Feb 21–Mar 14) in Fukuoka, based on its local frost dates. Confidence 43%.
When can I transplant broccoli outdoors in Fukuoka?
Transplant outdoors around late March (Mar 21–Apr 11) in Fukuoka, based on its local frost dates. Confidence 45%.
Can I plant broccoli in autumn in Fukuoka?
Yes — Fukuoka supports a second, autumn sowing of broccoli around mid August (Aug 16–Aug 30), timed to mature before the first fall frost.
How long is the growing season in Fukuoka?
Fukuoka has roughly 239 frost-free days, which is enough time to grow broccoli to maturity outdoors.
The rule of thumb
Sow broccoli as soon as the soil is workable — it tolerates cool weather and light frost. 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.