USDA hardiness zones in Louisiana
| Zone | Avg. extreme minimum | ZIP codes | Example cities |
|---|---|---|---|
| Zone 8b | 15 to 20°F | 153 | Shreveport, Bossier City, Monroe, Ruston |
| Zone 9a | 20 to 25°F | 277 | Baton Rouge, Lafayette, Lake Charles, St. George |
| Zone 9b | 25 to 30°F | 105 | New Orleans, Kenner, Houma, New Iberia |
| Zone 10a | 30 to 35°F | 6 | — |
Growing zone and frost dates by city
| City | Zone | Frost dates |
|---|---|---|
| New Orleans | 9b (25 to 30°F) | New Orleans frost dates |
| Baton Rouge | 9a (20 to 25°F) | Baton Rouge frost dates |
| Shreveport | 8b (15 to 20°F) | Shreveport frost dates |
| Lafayette | 9a (20 to 25°F) | Lafayette frost dates |
| Lake Charles | 9a (20 to 25°F) | Lake Charles frost dates |
| St. George | 9a (20 to 25°F) | St. George frost dates |
| Kenner | 9b (25 to 30°F) | Kenner frost dates |
| Bossier City | 8b (15 to 20°F) | Bossier City frost dates |
| Monroe | 8b (15 to 20°F) | Monroe frost dates |
| Alexandria | 9a (20 to 25°F) | Alexandria frost dates |
| Houma | 9b (25 to 30°F) | Houma frost dates |
| Central | 9a (20 to 25°F) | Central frost dates |
| Slidell | 9a (20 to 25°F) | Slidell frost dates |
| New Iberia | 9b (25 to 30°F) | New Iberia frost dates |
| Hammond | 9a (20 to 25°F) | Hammond frost dates |
| Ruston | 8b (15 to 20°F) | Ruston frost dates |
| Zachary | 9a (20 to 25°F) | Zachary frost dates |
| Sulphur | 9a (20 to 25°F) | Sulphur frost dates |
| Youngsville | 9a (20 to 25°F) | Youngsville frost dates |
| Gretna | 9b (25 to 30°F) | Gretna frost dates |
| Natchitoches | 9a (20 to 25°F) | Natchitoches frost dates |
| Broussard | 9a (20 to 25°F) | Broussard frost dates |
| Thibodaux | 9b (25 to 30°F) | Thibodaux frost dates |
| Opelousas | 9a (20 to 25°F) | Opelousas frost dates |
| Pineville | 9a (20 to 25°F) | Pineville frost dates |
| Gonzales | 9a (20 to 25°F) | Gonzales frost dates |
| Carencro | 9a (20 to 25°F) | Carencro frost dates |
| Mandeville | 9a (20 to 25°F) | Mandeville frost dates |
| West Monroe | 8b (15 to 20°F) | West Monroe frost dates |
| Baker | 9a (20 to 25°F) | Baker frost dates |
| Covington | 9a (20 to 25°F) | Covington frost dates |
| Crowley | 9a (20 to 25°F) | Crowley frost dates |
| Minden | 8b (15 to 20°F) | Minden frost dates |
| Abbeville | 9a (20 to 25°F) | Abbeville frost dates |
| Morgan City | 9b (25 to 30°F) | Morgan City frost dates |
| Bogalusa | 9a (20 to 25°F) | Bogalusa frost dates |
| Scott | 9a (20 to 25°F) | Scott frost dates |
| DeRidder | 9a (20 to 25°F) | DeRidder frost dates |
| Denham Springs | 9a (20 to 25°F) | Denham Springs frost dates |
| Jennings | 9a (20 to 25°F) | Jennings frost dates |
| Eunice | 9a (20 to 25°F) | Eunice frost dates |
| Harahan | 9b (25 to 30°F) | Harahan frost dates |
| Bastrop | 8b (15 to 20°F) | Bastrop frost dates |
| Westwego | 9b (25 to 30°F) | Westwego frost dates |
| Ponchatoula | 9a (20 to 25°F) | Ponchatoula frost dates |
| Addis | 9a (20 to 25°F) | Addis frost dates |
| Breaux Bridge | 9a (20 to 25°F) | Breaux Bridge frost dates |
| Donaldsonville | 9a (20 to 25°F) | Donaldsonville frost dates |
| Rayne | 9a (20 to 25°F) | Rayne frost dates |
| St. Gabriel | 9a (20 to 25°F) | St. Gabriel frost dates |
| Oakdale | 9a (20 to 25°F) | Oakdale frost dates |
| Walker | 9a (20 to 25°F) | Walker frost dates |
| Franklin | 9b (25 to 30°F) | Franklin frost dates |
| Ville Platte | 9a (20 to 25°F) | Ville Platte frost dates |
| Plaquemine | 9a (20 to 25°F) | Plaquemine frost dates |
| Patterson | 9b (25 to 30°F) | Patterson frost dates |
| Tallulah | 8b (15 to 20°F) | Tallulah frost dates |
| Grambling | 8b (15 to 20°F) | Grambling frost dates |
| St. Martinville | 9a (20 to 25°F) | St. Martinville frost dates |
| Leesville | 9a (20 to 25°F) | Leesville frost dates |
| Port Allen | 9a (20 to 25°F) | Port Allen frost dates |
Frequently asked questions
What growing zone is Louisiana in?
Louisiana’s ZIP codes span USDA zones 8b to 10a, and 9a is the most common. Zones vary with elevation and distance from water, so check your own ZIP code.
When should I plant?
Hardiness zones are about winter cold, not planting dates. For timing, use the last spring frost date for your city on our Louisiana frost dates page.