Carroll County, Maryland
Local growing conditions for Carroll County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 9 ZIP codes in our data.
Hardiness zones in Carroll County
Carroll County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Carroll County for its live forecast, frost dates, and planting calendar:
Eldersburg 21048
Hampstead 21074
Manchester 21102
Westminster 21157
Westminster 21158
Union Bridge 21757
New Windsor 21776
Eldersburg 21784
Taneytown 21787
More for Maryland
- Agriculture in Maryland
- Frost dates across Maryland
- 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.