Plan sowing from your local last frost date

Enter a local last frost planning date for the year you intend to plant. Get the indoor growing time from your seed packet, and choose any delay before planting out. In frost-free areas, use a locally suitable planting date instead.

Method and limitations

Planting date = your reference date + your chosen delay. Indoor sowing date = planting date − weeks indoors × 7. No crop schedule, local frost estimate or French climate data is built in. Soil warmth, hardening off, daylight and the forecast still determine whether planting is suitable.

Sources

No external reference is documented for this calculation; its method and limitations are described above.