Delaware County, Ohio
Local growing conditions for Delaware County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 10 ZIP codes in our data.
Hardiness zones in Delaware County
Delaware County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Delaware County for its live forecast, frost dates, and planting calendar:
Delaware 43015
Galena 43021
Kilbourne 43032
Columbus 43035
Ostrander 43061
Powell 43065
Radnor 43066
Sunbury 43074
Westerville 43082
Columbus 43240
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.