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When to plant lettuce in zone 4
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Lettuce in USDA zone 4
| Step | Dates |
|---|---|
| Start seeds indoors | Mar 29 – Apr 12 |
| Direct sow outdoors | Apr 19 – May 10 |
| Expected first harvest | from Jun 8 |
| Fall planting | Jul 31 – Aug 14 |
Average zone 4 frost dates: last spring frost ≈ May 10, first fall frost ≈ Sep 25 (138 frost-free days). Local dates can vary by 2-3 weeks.
Direct sow 2-4 weeks before the last frost; lettuce bolts in summer heat, so sow again in late summer.
FAQ
When to plant lettuce in zone 4?
Start seeds indoors: Mar 29 – Apr 12; Direct sow outdoors: Apr 19 – May 10; Expected first harvest: from Jun 8; Fall planting: Jul 31 – Aug 14.
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