When to plant radish in Fukuoka
Radish is cold-hardy, so every date keys off Fukuoka's frost dates of Apr 4.
Step 1 · Sow
Direct sow outdoors
Mar 7 – Mar 28
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Apr 1 – Apr 6
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Oct 10 – Oct 24
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Nov 11 – Nov 16
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Fukuoka's 239-day season leaves this much room.
Radish 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 radish outdoors in Fukuoka?
Direct-sow around early March (Mar 7–Mar 28) in Fukuoka, based on its local frost dates. Confidence 45%.
When will radish be ready to harvest in Fukuoka?
Expect to harvest from around early April (Apr 1–Apr 6) in Fukuoka, based on its local frost dates. Confidence 40%.
Can I plant radish in autumn in Fukuoka?
Yes — Fukuoka supports a second, autumn sowing of radish around early October (Oct 10–Oct 24), 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 radish to maturity outdoors.
The rule of thumb
Sow radish 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.