When to plant lettuce in Ottawa
Common questions
When can I sow lettuce outdoors in Ottawa?
Direct-sow around mid April (Apr 19–May 10) in Ottawa, based on its local frost dates. Confidence 86%.
When will lettuce be ready to harvest in Ottawa?
Expect to harvest from around early June (Jun 3–Jun 18) in Ottawa, based on its local frost dates. Confidence 80%.
When should I start lettuce seeds indoors in Ottawa?
Start seeds indoors around early April (Apr 1–Apr 22) in Ottawa, based on its local frost dates. Confidence 85%.
When can I transplant lettuce outdoors in Ottawa?
Transplant outdoors around mid April (Apr 19–May 10) in Ottawa, based on its local frost dates. Confidence 86%.
Can I plant lettuce in autumn in Ottawa?
Yes — Ottawa supports a second, autumn sowing of lettuce around early July (Jul 10–Jul 24), timed to mature before the first fall frost.
How long is the growing season in Ottawa?
Ottawa has roughly 161 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 Ottawa's frost dates.