Union County, North Carolina
Local growing conditions for Union 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 Union County
Union County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Union County for its live forecast, frost dates, and planting calendar:
Indian Trail 28079
Marshville 28103
Indian Trail 28104
Mineral Springs 28108
Unionville 28110
Monroe 28112
Waxhaw 28173
Wingate 28174
More for North Carolina
- Agriculture in North Carolina
- Frost dates across North Carolina
- USDA hardiness zones explained
- Planting calendar by ZIP code
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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.