Arizona’s desert climate presents unique lawn challenges. Bermuda is the top choice in Phoenix and Tucson for its extreme heat tolerance. Many homeowners overseed with Perennial Ryegrass in winter for year-round green.
Get your free Arizona lawn care plan in under 2 minutes
Measure My LawnArizona falls in the south zone (USDA Zone 9), which means warm-season grasses dominate. Here are the most common grass types for Arizona lawns:
Also viable: Tall Fescue, Zoysia Grass
Based on Bermuda Grass in the south zone. Spring soil temperatures in Arizona average 68°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 1.0-1.5 InchesPost-Emergent Weed ControlSpring Green-Up FertiliserEnsure 0.75 Inches Per Week of Water | 1.0-1.5" | 0.75"/wk |
| May | Mow to 1.0-1.5 InchesSummer Fertiliser (May Application)Ensure 0.75 Inches Per Week of Water | 1.0-1.5" | 0.75"/wk |
| June | Grub Preventive ApplicationMonitor for Chinch Bugs & DiseaseMonitor for Disease & StressMow to 1.0-1.5 InchesEnsure 1.5 Inches Per Week of Water | 1.0-1.5" | 1.5"/wk |
| July | Monitor for Disease & StressMow to 1.0-1.5 InchesEnsure 1.5 Inches Per Week of Water | 1.0-1.5" | 1.5"/wk |
| August | Monitor for Disease & StressMow to 1.0-1.5 InchesEnsure 1.5 Inches Per Week of Water | 1.0-1.5" | 1.5"/wk |
| September | Fall FertiliserMow to 1.0-1.5 InchesEnsure 0.75 Inches Per Week of Water | 1.0-1.5" | 0.75"/wk |
| October | Mow to 1.5-2.0 InchesEnsure 0.75 Inches Per Week of Water | 1.5-2.0" | 0.75"/wk |
| November | Water Your LawnWinterize Your Lawn | — | — |
| December | Water Your LawnWinter Dormancy Care | — | — |
These are the most problematic weeds in the mountain west region. Timing your pre-emergent application to soil temperature is the most effective prevention strategy.
Grassy annual · Germinates at 60-70°F soil temp
Broadleaf perennial · Germinates at 40-50°F soil temp
Broadleaf perennial · Germinates at 50-70°F soil temp
Broadleaf perennial · Germinates at 50-65°F soil temp
Grassy perennial · Germinates at 40-60°F soil temp
Snap a photo and we’ll identify your weed, then give you treatment options for free.
Identify My WeedsWith Arizona's average spring soil temperature of 68°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.
Measure your lawn on satellite imagery and get a personalised 12-month care calendar with exact product quantities. Free, no account required.
Measure My Lawn — It's Free