When to plant cabbage in Osaka
Cabbage is cold-hardy, so every date keys off Osaka's frost dates of Apr 10.
Step 1 · Sow
Start seeds indoors
Feb 27 – Mar 20
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 20 – Apr 10
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 29 – Jun 28
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jul 24 – Aug 7
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Oct 9 – Nov 8
Maturity window for the second sowing.
Window
Days to maturity
70 – 100 d
Osaka's 228-day season leaves this much room.
Cabbage on Osaka'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 10
NOV 22
Common questions
When will cabbage be ready to harvest in Osaka?
Expect to harvest from around late May (May 29–Jun 28) in Osaka, based on its local frost dates. Confidence 40%.
When should I start cabbage seeds indoors in Osaka?
Start seeds indoors around late February (Feb 27–Mar 20) in Osaka, based on its local frost dates. Confidence 43%.
When can I transplant cabbage outdoors in Osaka?
Transplant outdoors around mid March (Mar 20–Apr 10) in Osaka, based on its local frost dates. Confidence 45%.
Can I plant cabbage in autumn in Osaka?
Yes — Osaka supports a second, autumn sowing of cabbage around late July (Jul 24–Aug 7), timed to mature before the first fall frost.
How long is the growing season in Osaka?
Osaka has roughly 228 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 Osaka's frost dates.
Confidence 45/100 · Curated · based on NASA POWER (modeled) 1991–2020 · frost dates are probabilities, not guarantees.