Field guide
When to plant basil in USDA Zones 1–4
In USDA Zones 1–4, the planner’s broad outdoor planting window for basil runs from June. Basil takes 25–40 days from planting to first harvest.
Open plannerPlanting calendar for USDA Zones 1–4
- Spring planting
- June
- Fall planting
- Not recommended
- Days to harvest
- 25–40 days
- Water needs
- medium
What USDA Zones 1–4 do—and do not—tell you
These zones span average annual extreme minimum temperatures of roughly -60°F to -20°F. That is useful climate context, but it does not determine your exact frost dates. Check a local forecast or county Extension calendar before planting tender crops.
Succession planting: Plant every 3-4 weeks for fresh supply
How to know when to harvest
- Plant is 6+ inches tall with several sets of leaves
- Harvest before flowers form for best flavor
- Pinch off flower buds to extend the harvest season
Want a plan that accounts for your crops, growing method, equipment, and plant conditions? Open the free planner for a daily crop checklist and adaptive harvest forecast.
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