When to Plant Lettuce in Zone 4
In USDA zone 4, start seeds indoors around March 27, transplant or plant outdoors May 1 to June 25, and expect your first harvest around June 25. Zone 4 also has a fall planting window opening around July 12.
Lettuce planting calendar for USDA Zone 4
spring planting
Start seeds indoors
Mar 27
Transplant outdoors
May 1
Projected first harvest
Jun 25
fall planting
Direct sow
Jul 12
Projected first harvest
Sep 5
spring planting
fall planting
Most lettuce mature in about 45 to 85 days depending on the variety. Dates use USDA zone 4a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 4 means for lettuce
Average last spring frost
May 15
Average first fall frost
September 20
Those two dates are what set the schedule above. Zone 4 gives you roughly 128 frost-free days, and lettuce need about 45 to 85 days depending on the variety to mature.
Varieties to grow
12 varieties of lettuce in the HomeSown library. Tap any for its full grow guide.
Common problems with lettuce
What to watch for, with identification and treatment for each
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