Johnson County, Arkansas
Local growing conditions for Johnson County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 8 ZIP codes in our data.
Hardiness zones in Johnson County
Johnson County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Johnson County for its live forecast, frost dates, and planting calendar:
Clarksville 72830
Coal Hill 72832
Hagarville 72839
Hartman 72840
Knoxville 72845
Hagarville 72846
Oark 72852
Ozone 72854
More for Arkansas
- Agriculture in Arkansas
- Frost dates across Arkansas
- 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.