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Frost alerts & planting reminders

Get an email when frost is coming and when it is time to plant. No spam; unsubscribe anytime (privacy).

Data sources: NOAA NCEI U.S. Climate Normals 1991–2020 · NOAA National Weather Service (api.weather.gov) · NOAA USCRN · USDA Plant Hardiness Zone Map, 2023, Agricultural Research Service, U.S. Department of Agriculture (planthardiness.ars.usda.gov) · PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed 15 Oct 2026 · Iowa Environmental Mesonet (Iowa State University) · CIMIS, California Department of Water Resources (hourly air temperature, California stations) · Open-Meteo.com (modeled soil, CC BY 4.0) · Daymet V4 R1, ORNL DAAC, https://doi.org/10.3334/ORNLDAAC/2129 (advisory check for area grouping only) · US Census Bureau Gazetteer · GeoNames (CC BY 4.0) · Map basemap: U.S. Census Bureau TIGER/Line & cartographic boundary files.

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