When to plant cabbage in Tokyo
Cabbage is cold-hardy, so every date keys off Tokyo's frost dates of Mar 28.
Step 1 · Sow
Start seeds indoors
Feb 14 – Mar 7
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 7 – Mar 28
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 16 – Jun 15
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Aug 12 – Aug 26
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Oct 28 – Nov 27
Maturity window for the second sowing.
Window
Days to maturity
70 – 100 d
Tokyo's 258-day season leaves this much room.
Cabbage on Tokyo'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 28
DEC 11
Common questions
When will cabbage be ready to harvest in Tokyo?
Expect to harvest from around mid May (May 16–Jun 15) in Tokyo, based on its local frost dates. Confidence 40%.
When should I start cabbage seeds indoors in Tokyo?
Start seeds indoors around mid February (Feb 14–Mar 7) in Tokyo, based on its local frost dates. Confidence 43%.
When can I transplant cabbage outdoors in Tokyo?
Transplant outdoors around early March (Mar 7–Mar 28) in Tokyo, based on its local frost dates. Confidence 45%.
Can I plant cabbage in autumn in Tokyo?
Yes — Tokyo supports a second, autumn sowing of cabbage around mid August (Aug 12–Aug 26), timed to mature before the first fall frost.
How long is the growing season in Tokyo?
Tokyo has roughly 258 frost-free days, which is enough time to grow cabbage to maturity outdoors.
The rule of thumb
Sow cabbage 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 Tokyo's frost dates.
Confidence 45/100 · Curated · based on NASA POWER (modeled) 1991–2020 · frost dates are probabilities, not guarantees.