In USDA zone 4, the last spring frost usually falls between May 1 and May 20. Sow or plant arugula around Apr 9 to Jun 3. Expect to harvest around May 28 to Jul 22.
| Sow or plant outside | Apr 9 to Jun 3 |
|---|---|
| Harvest | May 28 to Jul 22 |
| Typical last spring frost | May 1 to May 20 |
| 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 arugula in your exact town, not just your zone.
Get my dates free →Peppery salad greens in a month. Read the full arugula growing guide: spacing, sun and soil, step-by-step care, problems and the best varieties.