In USDA zone 6, the last spring frost usually falls between Apr 5 and Apr 30. Start basil indoors around Mar 5 to Apr 4. Plant them out around May 17 to Jun 10. Expect to harvest around Jun 22 to Oct 15.
| Start seeds indoors | Mar 5 to Apr 4 |
|---|---|
| Plant outside | May 17 to Jun 10 |
| Harvest | Jun 22 to Oct 15 |
| Typical last spring frost | Apr 5 to Apr 30 |
| Typical first fall frost | around Oct 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 basil in your exact town, not just your zone.
Get my dates free →Pinch it often and it gives all summer. Read the full basil growing guide: spacing, sun and soil, step-by-step care, problems and the best varieties.