When should
you plant?
Your hardiness zone, average frost dates at 10 / 50 / 90% probability, and a crop-by-crop planting calendar — computed from your ZIP’s nearest NOAA weather station. No sign-up, no guessing.
We match your ZIP to the nearest NOAA weather station within 50 km that has a complete freeze record.
Its 1991–2020 normals give your last-spring and first-fall frost at 10, 50, and 90% probability.
University-extension crop offsets shift those dates into a planting window for every crop we track.
Browse by state
51 states with dataBrowse by crop
156 crops trackedYour zone, frost dates at every probability, and growing-season length — from one ZIP.
A per-crop schedule — start indoors, transplant, direct-sow, fall-sow — sorted by what to do next.
A large share of US cities now have a longer frost-free season than a decade ago. See how much yours moved.
Every frost date, zone, and planting window on this site — served as JSON under /api/v1. No key, no auth.