When to plant lettuce in Portland
Common questions
When can I sow lettuce outdoors in Portland?
Direct-sow around early April (Apr 7–Apr 28) in Portland, based on its local frost dates. Confidence 86%.
When will lettuce be ready to harvest in Portland?
Expect to harvest from around late May (May 25–Jun 9) in Portland, based on its local frost dates. Confidence 80%.
When should I start lettuce seeds indoors in Portland?
Start seeds indoors around early April (Apr 3–Apr 24) in Portland, based on its local frost dates. Confidence 85%.
When can I transplant lettuce outdoors in Portland?
Transplant outdoors around early April (Apr 10–May 1) in Portland, based on its local frost dates. Confidence 89%.
Can I plant lettuce in autumn in Portland?
Yes — Portland supports a second, autumn sowing of lettuce around mid July (Jul 12–Jul 26), timed to mature before the first fall frost.
How long is the growing season in Portland?
Portland has roughly 165 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 Portland's frost dates.