Seed starting date calculator

PRO

Start-indoors date based on weeks before last frost.

Inputs

Result

Start seeds
52 d before frost
In weeks
7.4 wk

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The formula

Days = weeks × 7 + days to germinate.

Worked example

6 wk + 10 d germination = 52 days before your last frost.

Frequently asked

How do I find last frost?

Search your zip on NOAA or Farmer's Almanac's frost dates page.