When to plant lettuce in Sapporo
Common questions
When can I sow lettuce outdoors in Sapporo?
Direct-sow around late April (Apr 27–May 18) in Sapporo, based on its local frost dates. Confidence 44%.
When will lettuce be ready to harvest in Sapporo?
Expect to harvest from around mid June (Jun 11–Jun 26) in Sapporo, based on its local frost dates. Confidence 40%.
When should I start lettuce seeds indoors in Sapporo?
Start seeds indoors around mid April (Apr 14–May 5) in Sapporo, based on its local frost dates. Confidence 43%.
When can I transplant lettuce outdoors in Sapporo?
Transplant outdoors around late April (Apr 27–May 18) in Sapporo, based on its local frost dates. Confidence 44%.
Can I plant lettuce in autumn in Sapporo?
Yes — Sapporo supports a second, autumn sowing of lettuce around late July (Jul 25–Aug 8), 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 lettuce to maturity outdoors.
Sow lettuce 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.