In USDA zone 3, the last spring frost usually falls between May 5 and May 31. Sow or plant lettuce & greens around Apr 16 to Jun 4. Expect to harvest around Jun 16 to Aug 4.
| Sow or plant outside | Apr 16 to Jun 4 |
|---|---|
| Harvest | Jun 16 to Aug 4 |
| Typical last spring frost | May 5 to May 31 |
| Typical first fall frost | around Sep 15 |
USDA zones measure winter cold, not frost dates, so these are typical dates for the zone. Towns in the same zone can be weeks apart.
Get dates for lettuce & greens in your exact town, not just your zone.
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