St. Tammany Parish, Louisiana
Local growing conditions for St. Tammany Parish: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 16 ZIP codes in our data.
Hardiness zones in St. Tammany Parish
St. Tammany Parish spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in St. Tammany Parish for its live forecast, frost dates, and planting calendar:
Covington 70457
Slidell 70458
Abita Springs 70420
Sun 70431
Covington 70433
Covington 70435
Folsom 70437
Lacombe 70445
Madisonville 70447
Mandeville 70448
Pearl River 70452
Slidell 70460
Slidell 70461
Sun 70463
Sun 70464
Mandeville 70471
More for Louisiana
- Agriculture in Louisiana
- Frost dates across Louisiana
- 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.