When to plant basil in Fukuoka
Basil is frost-tender, so every date keys off Fukuoka's last spring frost of Mar 15.
Step 1 · Sow
Start seeds indoors
Feb 8 – Mar 1
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 22 – Apr 12
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 21 – Jun 20
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 90 d
Fukuoka's 268-day season leaves this much room.
Basil 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
MAR 15
DEC 8
Common questions
When can I sow basil outdoors in Fukuoka?
Direct-sow around late March (Mar 22–Apr 12) in Fukuoka, based on its local frost dates. Confidence 72%.
When will basil be ready to harvest in Fukuoka?
Expect to harvest from around late May (May 21–Jun 20) in Fukuoka, based on its local frost dates. Confidence 65%.
When should I start basil seeds indoors in Fukuoka?
Start seeds indoors around early February (Feb 8–Mar 1) in Fukuoka, based on its local frost dates. Confidence 68%.
When can I transplant basil outdoors in Fukuoka?
Transplant outdoors around late March (Mar 22–Apr 12) in Fukuoka, based on its local frost dates. Confidence 72%.
How long is the growing season in Fukuoka?
Fukuoka has roughly 268 frost-free days, which is enough time to grow basil to maturity outdoors.
The rule of thumb
Sow basil 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 72/100 · NASA POWER (modeled) · 1991–2020 · frost dates are probabilities, not guarantees.