Miami County, Ohio
Local growing conditions for Miami County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 11 ZIP codes in our data.
Hardiness zones in Miami County
Miami County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Miami County for its live forecast, frost dates, and planting calendar:
Casstown 45312
Covington 45318
Fletcher 45326
Laura 45337
Ludlow Falls 45339
Piqua 45356
Pleasant Hill 45359
Potsdam 45361
Tipp City 45371
Troy 45373
West Milton 45383
More for Ohio
- Agriculture in Ohio
- Frost dates across Ohio
- USDA hardiness zones explained
- Planting calendar by ZIP code
County growing conditions are compiled from our ZIP-code database, USDA hardiness-zone data, and NOAA climate normals. Conditions vary within a county by elevation and local microclimate. Page updated Aug 4, 2026.