When to plant bush (snap) bean in Sapporo
Bush (snap) bean is frost-tender, so every date keys off Sapporo's last spring frost of May 5.
Step 1 · Sow
Direct sow outdoors
May 12 – Jun 2
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Jul 1 – Jul 11
Picking runs until conditions turn against the crop.
Window
Days to maturity
50 – 60 d
Sapporo's 173-day season leaves this much room.
Bush (snap) bean on Sapporo'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
MAY 5
OCT 25
Common questions
When can I sow bush (snap) bean outdoors in Sapporo?
Direct-sow around mid May (May 12–Jun 2) in Sapporo, based on its local frost dates. Confidence 84%.
When will bush (snap) bean be ready to harvest in Sapporo?
Expect to harvest from around early July (Jul 1–Jul 11) in Sapporo, based on its local frost dates. Confidence 76%.
How long is the growing season in Sapporo?
Sapporo has roughly 173 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 Sapporo's frost dates.
Confidence 84/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.