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Set both frost dates.
Crops
Days to maturity is on the seed packet. Weeks indoors is 0 for anything you direct-sow. Transplant offset is how many days after the last frost you put it out.
| Crop | DTM | Weeks indoors | Out after frost (days) | Start seeds | Plant | Harvest |
|---|
Add a crop and press Work out the dates.
Succession sowing
Set a maturity time and an interval.
From the book — Chapter 5. Season length is simply first frost − last frost. Harvest date is planting date + days to maturity — counted from transplant for things you start indoors, from emergence for things you direct-sow. The last sensible planting day is first frost − days to maturity; past that, the crop runs out of season. And seed-starting is that chain run backwards: transplant date minus the weeks indoors, with 7–10 days on the end for hardening off.
Frost dates are averages, not promises — keep row covers handy for a late surprise. Everything stays in your browser.