| City | Seed / establish | Pre-emergent | Season |
|---|
| New Orleans | Feb 15 – Mar 1 | Jan 11 – Feb 1 | 333 days |
| Baton Rouge | Mar 14 – Mar 28 | Feb 7 – Feb 28 | 271 days |
| Shreveport | Mar 14 – Mar 28 | Feb 7 – Feb 28 | 269 days |
All Louisiana station records (95)
Every NOAA weather station in Louisiana with complete 1991–2020 frost normals — pick
the one nearest you (similar elevation matters more than plain distance).
Not sure which station to trust? Use the
ZIP code lookup
for the quick answer, or pick the station whose terrain most resembles your yard.
Lawn timing geography of Louisiana
Across the 98 Louisiana locations with complete 1991–2020 frost
normals, the average last spring frost — the anchor for pre-emergent and spring
work — ranges from Jan 22 (NEW Orleans Lakefront Airport) to Mar 30
(Homer 1N), a spread of about 10 weeks driven by elevation, latitude, and terrain.
The same job can be weeks apart at opposite ends of the state, which is why a
state-level date is only a starting point — pick the location nearest your yard and
plan from its calendar.
The Louisiana lawn year in one paragraph
The Louisiana lawn year lives in the warm months: pre-emergent in late winter before soil crosses 55°F, establishment and the first feeding after full green-up, aeration in the heat of active growth, and steady mowing all summer. The discipline that separates good southern lawns is the stop date — no nitrogen within 6–8 weeks of first frost, so the lawn hardens off and goes dormant on schedule. Details by task: when to overseed in Louisiana, when to aerate in Louisiana, when to apply crabgrass pre-emergent in Louisiana, and more above.