When to plant bush (snap) bean in Osaka
Bush (snap) bean is frost-tender, so every date keys off Osaka's last spring frost of Mar 22.
Step 1 · Sow
Direct sow outdoors
Mar 29 – Apr 19
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
May 18 – May 28
Picking runs until conditions turn against the crop.
Window
Days to maturity
50 – 60 d
Osaka's 258-day season leaves this much room.
Bush (snap) bean 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
MAR 22
DEC 5
Common questions
When can I sow bush (snap) bean outdoors in Osaka?
Direct-sow around late March (Mar 29–Apr 19) in Osaka, based on its local frost dates. Confidence 86%.
When will bush (snap) bean be ready to harvest in Osaka?
Expect to harvest from around mid May (May 18–May 28) in Osaka, based on its local frost dates. Confidence 77%.
How long is the growing season in Osaka?
Osaka has roughly 258 frost-free days, which is enough time to grow bush (snap) bean to maturity outdoors.
The rule of thumb
Sow bush (snap) bean 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 Osaka's frost dates.
Confidence 86/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.