When to plant basil in zone 4
In USDA zone 4, the last spring frost usually falls between May 1 and May 20. Start basil indoors around Mar 28 to Apr 27. Plant them out around Jun 9 to Jul 3. Expect to harvest around Jul 15 to Sep 15.
Zone 4 dates for basil
| Start seeds indoors | Mar 28 to Apr 27 |
|---|---|
| Plant outside | Jun 9 to Jul 3 |
| Harvest | Jul 15 to Sep 15 |
| 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 basil in your exact town, not just your zone.
Get my dates free →How to grow basil
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.