When to plant lettuce in Detroit
Common questions
When can I sow lettuce outdoors in Detroit?
Direct-sow around late March (Mar 31–Apr 21) in Detroit, based on its local frost dates. Confidence 85%.
When will lettuce be ready to harvest in Detroit?
Expect to harvest from around mid May (May 15–May 30) in Detroit, based on its local frost dates. Confidence 79%.
When should I start lettuce seeds indoors in Detroit?
Start seeds indoors around mid March (Mar 18–Apr 8) in Detroit, based on its local frost dates. Confidence 84%.
When can I transplant lettuce outdoors in Detroit?
Transplant outdoors around late March (Mar 31–Apr 21) in Detroit, based on its local frost dates. Confidence 85%.
Can I plant lettuce in autumn in Detroit?
Yes — Detroit supports a second, autumn sowing of lettuce around late July (Jul 30–Aug 13), timed to mature before the first fall frost.
How long is the growing season in Detroit?
Detroit has roughly 194 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 Detroit's frost dates.