When to plant turnip in Sapporo
Turnip is cold-hardy, so every date keys off Sapporo's frost dates of May 12.
Step 1 · Sow
Direct sow outdoors
May 1 – May 22
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Jun 10 – Jun 25
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Aug 5 – Aug 19
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Sep 21 – Oct 6
Maturity window for the second sowing.
Window
Days to maturity
40 – 55 d
Sapporo's 166-day season leaves this much room.
Turnip 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 12
OCT 20
Common questions
When can I sow turnip outdoors in Sapporo?
Direct-sow around early May (May 1–May 22) in Sapporo, based on its local frost dates. Confidence 44%.
When will turnip be ready to harvest in Sapporo?
Expect to harvest from around early June (Jun 10–Jun 25) in Sapporo, based on its local frost dates. Confidence 40%.
Can I plant turnip in autumn in Sapporo?
Yes — Sapporo supports a second, autumn sowing of turnip around early August (Aug 5–Aug 19), timed to mature before the first fall frost.
How long is the growing season in Sapporo?
Sapporo has roughly 166 frost-free days, which is enough time to grow turnip to maturity outdoors.
The rule of thumb
Sow turnip 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 Sapporo's frost dates.
Confidence 45/100 · Curated · based on NASA POWER (modeled) 1991–2020 · frost dates are probabilities, not guarantees.