Orange County, California
Local growing conditions for Orange County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 88 ZIP codes in our data.
Hardiness zones in Orange County
Orange County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Orange County for its live forecast, frost dates, and planting calendar:
Irvine 92620
Buena Park 90620
Buena Park 90621
La Palma 90623
Cypress 90630
La Habra 90631
Stanton 90680
Los Alamitos 90720
Seal Beach 90740
Huntington Beach 90742
Seal Beach 90743
Irvine 92602
Irvine 92603
Irvine 92604
Irvine 92606
Lake Forest 92610
Irvine 92612
Irvine 92614
Irvine 92617
Irvine 92618
Dana Point 92624
Newport Beach 92625
Costa Mesa 92626
Costa Mesa 92627
More for California
- Agriculture in California
- Frost dates across California
- 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.