Knox County, Tennessee
Local growing conditions for Knox County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 23 ZIP codes in our data.
Hardiness zones in Knox County
Knox County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Knox County for its live forecast, frost dates, and planting calendar:
Plainview 37721
Mascot 37806
Powell 37849
Strawberry Plains 37871
Knoxville 37902
Knoxville 37909
Knoxville 37912
Knoxville 37914
Knoxville 37915
Knoxville 37916
Knoxville 37917
Knoxville 37918
Knoxville 37919
Knoxville 37920
Knoxville 37921
Knoxville 37922
Knoxville 37923
Knoxville 37924
Knoxville 37929
Karns 37931
Farragut 37932
Farragut 37934
Halls 37938
More for Tennessee
- Agriculture in Tennessee
- Frost dates across Tennessee
- 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.