Allen County, Ohio
Local growing conditions for Allen County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 13 ZIP codes in our data.
Hardiness zones in Allen County
Allen County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Allen County for its live forecast, frost dates, and planting calendar:
Lima 45801
Lima 45804
Lima 45805
Fort Shawnee 45806
Elida 45807
Beaverdam 45808
Gomer 45809
Bluffton 45817
Cairo 45820
Delphos 45833
Harrod 45850
Lafayette 45854
Spencerville 45887
More for Ohio
- Agriculture in Ohio
- Frost dates across Ohio
- 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.