Planting Date Calculator — Plant Relative to a Frost Date
Enter a frost date (last or first frost) and how many weeks or days before or after it you want to plant. The calculator gives you the planting date. You supply the frost date — UtilityBull does not assume your local frost date.
What this calculator determines
It calculates a planting date by adding or subtracting a set number of weeks and days from a frost date you enter.
Related calculators
Seed Starting Date Calculator
Indoor seed-starting date from target transplant date and weeks before
Frost Date Planting Planner
Generate multiple planting dates relative to one frost date
Fall Garden Planting Calculator
Latest planting date from first frost, days to maturity, and harvest buffer
Days to Harvest Calculator
Estimated harvest date from planting date and days to maturity
Succession Planting Calculator
Generate a succession planting schedule from start date and interval
Examples
Plant 2 weeks after last frost
Last frost May 1, plant 2 weeks after
Calculation
- 2 weeks = 14 days
- May 1 + 14 days = May 15
Planting date: May 15
Assumptions & Conventions
- Offset arithmetic
- Planting date = frost date ± (weeks × 7 + days), with direction chosen as before or after.
- Frost date
- You supply the frost date for your location; UtilityBull does not look it up or assume one.
- Crop timing
- Whether to plant before or after frost depends on the crop — follow the recommendation for your specific crop.