Planting Date · Spinach
Spinach Planting Date Calculator
Calculate the optimal planting dates for spinach based on your USDA zone, last frost date, and preferred start method.
Optimal Soil Temp
45°F
Days to Maturity
40 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
- Spinach is very cold-hardy — sow as early as 6 weeks before the last frost.
- It bolts quickly in warm weather; plant early and harvest young.
- Fall plantings are often superior — sow 6–8 weeks before the first fall frost.
- In zones 7–10, spinach can overwinter with light mulch.