Field guide
When to plant radishes in USDA Zones 11–13
In USDA Zones 11–13, the planner’s broad outdoor planting window for radishes runs from October to February. Radishes takes 22–35 days from planting to first harvest.
Open plannerPlanting calendar for USDA Zones 11–13
- Spring planting
- October to February
- Fall planting
- Not recommended
- Days to harvest
- 22–35 days
- Water needs
- medium
What USDA Zones 11–13 do—and do not—tell you
These zones span average annual extreme minimum temperatures of roughly 40°F to 70°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 2 weeks for continuous harvest
How to know when to harvest
- Shoulders of the root push above soil surface
- Root is about 1 inch in diameter (for standard varieties)
- Don't let them get too big — they turn woody and pithy
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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