When to plant lettuce in Portland
Common questions
When can I sow lettuce outdoors in Portland?
Direct-sow around late December (Dec 26–Jan 16) in Portland, based on its local frost dates. Confidence 85%.
When will lettuce be ready to harvest in Portland?
Expect to harvest from around early February (Feb 9–Feb 24) in Portland, based on its local frost dates. Confidence 79%.
When should I start lettuce seeds indoors in Portland?
Start seeds indoors around early February (Feb 1–Feb 22) in Portland, based on its local frost dates. Confidence 84%.
When can I transplant lettuce outdoors in Portland?
Transplant outdoors around late December (Dec 26–Jan 16) in Portland, based on its local frost dates. Confidence 85%.
Can I plant lettuce in autumn in Portland?
Yes — Portland supports a second, autumn sowing of lettuce around mid August (Aug 12–Aug 26), timed to mature before the first fall frost.
How long is the growing season in Portland?
Portland has roughly 266 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.