Contact
Reach PlantZoneFinder by email at [email protected] for data corrections, source questions, feature suggestions, or reuse questions. Corrections to any published frost date, zone, or planting window are the top priority and are checked against the primary source before the site is updated.
Email: [email protected]
Corrections come first
If a frost date, hardiness zone, growing-season length, or planting window looks off, please say so. Corrections to any published value are the top priority: they are checked against the primary source — NOAA's Climate Normals, the USDA hardiness map, or the cited extension guides — before the site is updated. A note about which location and which number helps.
Suggestions and questions
Ideas for locations, crops, or features are welcome, as are questions about how a number was derived — the methodology page covers the sources and formulas, and email fills in the rest.
Reuse and licensing
The underlying NOAA and USDA data are public-domain U.S. Government works. For questions about reusing this site's original text, layout, or computed planting calendars, email [email protected].