Louisiana’s subtropical heat and heavy rainfall create year-round growing conditions. St. Augustine is the most popular residential grass, thriving in the state’s shade and humidity, while Bermuda handles the intense summer sun.
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Measure My LawnLouisiana falls in the south zone (USDA Zone 9), which means warm-season grasses dominate. Here are the most common grass types for Louisiana lawns:
Also viable: Zoysia Grass, Bahia Grass
Based on St. Augustine Grass in the south zone. Spring soil temperatures in Louisiana average 65°F, meaning your pre-emergent window opens as early as February.
| Month | Key Tasks | Mowing | Water |
|---|---|---|---|
| January | Water Your LawnWinter Dormancy Care | — | — |
| February | Water Your LawnWinter Dormancy Care | — | — |
| March | Apply Pre-Emergent HerbicideSpring Clean-UpSpring Clean-Up & DethatchWater Your Lawn | — | — |
| April | Mow to 3.0-3.5 InchesSpring Green-Up FertiliserEnsure 0.75 Inches Per Week of Water | 3.0-3.5" | 0.75"/wk |
| May | Mow to 3.0-3.5 InchesSummer Fertiliser (May Application)Ensure 0.75 Inches Per Week of Water | 3.0-3.5" | 0.75"/wk |
| June | Grub Preventive ApplicationMonitor for Chinch Bugs & DiseaseMonitor for Disease & StressMow to 3.5-4.0 InchesEnsure 1.5 Inches Per Week of Water | 3.5-4.0" | 1.5"/wk |
| July | Monitor for Disease & StressMow to 3.5-4.0 InchesEnsure 1.5 Inches Per Week of Water | 3.5-4.0" | 1.5"/wk |
| August | Monitor for Disease & StressMow to 3.5-4.0 InchesEnsure 1.5 Inches Per Week of Water | 3.5-4.0" | 1.5"/wk |
| September | Fall FertiliserMow to 3.0-3.5 InchesEnsure 0.75 Inches Per Week of Water | 3.0-3.5" | 0.75"/wk |
| October | Mow to 3.0-3.5 InchesEnsure 0.75 Inches Per Week of Water | 3.0-3.5" | 0.75"/wk |
| November | Water Your LawnWinterize Your Lawn | — | — |
| December | Water Your LawnWinter Dormancy Care | — | — |
These are the most problematic weeds in the south central region. Timing your pre-emergent application to soil temperature is the most effective prevention strategy.
Grassy annual · Germinates at 55-65°F soil temp
Grassy annual · Germinates at 60-70°F soil temp
Broadleaf annual · Germinates at 50-60°F soil temp
Sedge · Germinates at 60-70°F soil temp
Sedge · Germinates at 70-80°F soil temp
Snap a photo and we’ll identify your weed, then give you treatment options for free.
Identify My WeedsWith Louisiana's average spring soil temperature of 65°F, here are the key temperature thresholds that drive your lawn care timing:
| Task | Temp | Direction | Why It Matters |
|---|---|---|---|
| Warm-season spring fertiliser (bermuda/zoysia) | 65°F | Rising | Green-up application when soil reaches 65°F for warm-season grasses |
| Grub preventive (GrubEx) | 60°F | Rising | Apply before grub eggs hatch, typically June when soil reaches 60°F |
| Post-emergent broadleaf weed control | 60°F–80°F | Rising | Air temperature critical: avoid application above 85°F (herbicide damage risk) |
| Warm-season dormancy begins | 0°F–55°F | Falling | Warm-season grass dormancy when soil drops below 55°F |
| Warm-season spring greenup begins | 60°F–65°F | Rising | Warm-season grass emerges from dormancy at 60-65°F soil temp |
| Winterizer fertiliser (warm-season) | 55°F–60°F | Falling | Fall application when soil temp declining through 55-60°F range |
Enter your ZIP code to see current soil temperature estimates and which lawn care tasks are active right now in your area.
Enter your ZIP code to see your soil temperature curve and treatment timing
Take a photo of a single grass blade and compare it to your region's common grasses online, or pull out a small section and show it to your local garden center. The easiest way is to check what your lawn builder or previous owner planted—most lawns in a region have 1–2 standard types.
Spring (when grass first greens up) is ideal because the grass is actively growing and will respond to your care. Fall is the second-best time. You can start anytime, but spring gives fastest visible results.
It's the single best investment for a new lawn manager—a $30 test tells you your pH, nutrient levels, and what fertilizer you actually need. Without it, you're guessing and might waste money. Most universities offer cheap tests through their extension service.
Yes. Most lawn problems improve with correct mowing, watering, and targeted fertilizer within 1–2 seasons. Only bare patches larger than 5 square feet or complete dead zones typically need reseeding or patching.
Mow at the right height for your grass type—this single action solves 40% of lawn problems because taller grass shades weeds, holds water better, and has deeper roots. Fix your mower height before buying anything else.
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