Planting Date · Radishes
Radishes Planting Date Calculator
Calculate the optimal planting dates for radishes based on your USDA zone, last frost date, and preferred start method.
Optimal Soil Temp
45°F
Days to Maturity
25 days
Frost Tolerance
hardy
Planting Depth
1/2 inch
Input
Fill in the fields below, then click Calculate.
Select your USDA plant hardiness zone (3–10).
Approximate month of your last spring frost.
How you plan to start the crop.
No results yet
Fill in the fields and click Calculate to see results.
Tips & Best Practices
- Radishes are one of the fastest crops — ready in 25–35 days.
- Direct sow 4–5 weeks before the last frost.
- Succession plant every 10 days for a continuous harvest.
- Radishes become pithy and hot in warm weather; grow them in spring and fall.