Charles County, Maryland
Local growing conditions for Charles County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 22 ZIP codes in our data.
Hardiness zones in Charles County
Charles County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Charles County for its live forecast, frost dates, and planting calendar:
Waldorf 20601
Waldorf 20602
Bensville 20603
La Plata 20611
Benedict 20612
Bryans Road 20616
Bryantown 20617
Charlotte Hall 20622
Cobb Island 20625
Dahlgren Center 20632
Hughesville 20637
Cherry Hill 20640
Cobb Island 20645
La Plata 20646
Potomac Heights 20658
Cobb Island 20661
Fairview Beach 20662
Rock Point 20664
Pomfret 20675
Port Tobacco Village 20677
Port Tobacco Village 20693
Waldorf 20695
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.