When to plant bush (snap) bean in Tokyo
Bush (snap) bean is frost-tender, so every date keys off Tokyo's last spring frost of Mar 25.
Step 1 · Sow
Direct sow outdoors
Apr 1 – Apr 22
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
May 21 – May 31
Picking runs until conditions turn against the crop.
Window
Days to maturity
50 – 60 d
Tokyo's 255-day season leaves this much room.
Bush (snap) bean 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 25
DEC 5
Common questions
When can I sow bush (snap) bean outdoors in Tokyo?
Direct-sow around early April (Apr 1–Apr 22) in Tokyo, based on its local frost dates. Confidence 88%.
When will bush (snap) bean be ready to harvest in Tokyo?
Expect to harvest from around late May (May 21–May 31) in Tokyo, based on its local frost dates. Confidence 79%.
How long is the growing season in Tokyo?
Tokyo has roughly 255 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 Tokyo's frost dates.
Confidence 88/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.