Plan backward. Harvest on time.

Target Harvest Date Calculator

Choose when you want to harvest, then calculate when to sow indoors, direct sow, or transplant your crop.

TARGET HARVEST✓
HARVESTDATE
SEED ← TRANSPLANT ← HARVEST
↶Work backwardTurn a target harvest into practical planting dates.
＋Allow for slower growthAdd time for spring, fall, or peak production.
✎Use your exact varietyReplace defaults with the packet's maturity value.

Interactive crop scheduling

Calculate your seeding date

Select a crop and the date you want it ready to harvest.

For most transplanted crops, days to maturity begins when the seedling is planted outdoors—not when it is seeded indoors.

Recommended seeding date—

Choose a crop and target date.

Shop this crop →

How it is calculated

Plan backward from harvest

The uploaded worksheet subtracts every stage of production from the desired event date.

Seeding date = target date − maturity − seasonal allowance − production allowance − pre-event buffer − indoor growing time

Use the result wisely

A planning date, not a guarantee

  • Use the maturity printed for the exact variety.
  • Add time when short days or cool soil will slow growth.
  • For a harvest window, calculate more than one seeding.
  • Weather, soil, pests, and crop load can shift harvest.

Your selections

My Target Harvest Plan

Save multiple crops or events, then print the complete schedule.

Saved target-harvest schedules will appear here.

Planning references

Crop defaults are planning baselines. Product maturity information and your own garden records should take priority.