St. Augustine vs. Bermuda in San Antonio: What Your Grass Needs in Late Winter

Late winter in San Antonio, TX is lawn “decision season.” Warm days start showing up, but we can still get cold snaps—so what you do in February can either set up a smooth spring green-up… or create thinning, scalped, stressed turf that fights weeds all year.

At Lawn DR Landscaping, we see one pattern over and over across Stone Oak, Alamo Heights, Helotes, Leon Valley, and the broader Bexar County area:

• Shadier yards (live oaks, tight lots) do better with St. Augustine
• Full-sun yards (open front lawns, fewer trees) often thrive with Bermuda
• Watering rules + mowing height are where most homeowners accidentally damage their lawn

Let’s break it down.

Choose St. Augustine if you have:

• Partial shade most of the day (tree canopy, north-facing yards)
• A “lush” look and softer texture preference
• Willingness to stay on top of disease prevention + proper watering

Choose Bermuda if you have:

• 6+ hours of direct sun most days
• High traffic (kids, pets) and want faster recovery
• A lower-water, tougher turf option (when managed correctly)

Texas A&M AgriLife notes Bermuda is not very shade tolerant and may struggle in moderate to dense shade—so shaded areas often do better with St. Augustine (or zoysia).

If your yard is shaded (especially under live oaks)

• St. Augustine is usually the safer bet.
• Bermuda tends to thin, and thinning = weeds in spring.

What we do in late winter for shaded lawns:

• Improve light/airflow where possible (selective pruning)
• Keep mowing higher to protect the turf
• Avoid “panic watering” during cool weeks (it can invite disease)

If your yard is full sun

• Bermuda can shine—but only if mowing is consistent and not too low too fast.
• Bermuda is also more forgiving if your schedule slips.
  

Scalping is cutting too much leaf blade at once—your lawn turns brown and has to “rebuild” instead of thickening.

St. Augustine mowing height (San Antonio)

Texas A&M’s St. Augustine management calendar recommends mowing 2 to 4 inches and mowing often enough to prevent scalping, following the “one-third rule” (don’t remove more than 1/3 of the leaf at a time).

Late winter tip: If your St. Augustine is still semi-dormant, don’t chase a “clean cut” by dropping the mower height. Keep it steady and tidy.

Bermuda mowing height (San Antonio)

Texas A&M’s Bermuda calendar recommends 1–2 inches for home lawns and emphasizes mowing frequently enough to prevent scalping.

Late winter tip: A lot of scalping happens when homeowners go from “haven’t mowed much” to “let’s cut it short.” If Bermuda is not actively growing yet, ease into mowing—don’t shock it.

In San Antonio, watering isn’t just about turf science—it’s about what you’re allowed to do based on drought stage and local ordinance. SAWS updates rules and restrictions by stage.

For example, under Stage 3, SAWS limits landscape watering with sprinklers/soaker hoses to once per week during specific hours on your designated day.

What that means for St. Augustine vs. Bermuda

• St. Augustine generally has a higher water demand and can show stress faster if watering is limited—so it’s extra important to:
  • Fix coverage issues
  • Reduce runoff
  • Water deeply (when allowed) instead of frequent light cycles
• Bermuda is more drought-tolerant and often holds up better with fewer watering events—if mowing and soil health are right.

Late winter pro move: Do an irrigation audit and fix broken heads/coverage before spring demand ramps up. (Texas A&M also recommends turning irrigation off during winter when turf isn’t actively growing.)

St. Augustine (especially in shade-heavy San Antonio yards)

Do:

• Keep mowing in the 2–4″ range if needed (mainly to prevent winter weeds from flowering)
• Keep irrigation off unless the lawn is showing real drought stress
• Start planning pre-emergent timing (soil temp-based, not calendar-based)

Avoid:

• Fertilizing too early (wait until it’s actively growing and has been mowed at least twice)
• Night watering (fungus risk goes up when it stays cool and damp)

Bermuda (full sun San Antonio lawns)

Do:

• Mow only as needed to keep winter weeds from flowering, and keep it in the 1–2″ range when you are mowing
• Leave irrigation off through dormancy/slow growth, then ramp up as growth returns
• Plan pre-emergent for spring weeds—timing matters

Avoid:

Herbicide applications during spring green-up without caution (turf injury risk can increase)

Late winter is the best time to correct mowing height, prevent scalping, and make a plan that actually works with SAWS watering rules—before weeds and thin spots take over.

Call Lawn DR Landscaping today to schedule a late-winter Lawn Health Check in San Antonio, TX.
We’ll evaluate sun vs. shade, identify whether St. Augustine or Bermuda is the better fit for your yard, check for scalping risk, and recommend a simple February action plan (mowing height, watering strategy, and next-step treatments).

Should I scalp my Bermuda in February?
Usually, no. Scalping is best handled at the right moment right before true green-up—and done carefully. Texas A&M emphasizes mowing frequency and avoiding removing too much leaf tissue at once.

Can St. Augustine grow in full sun in San Antonio?
Yes, but it often needs more water and tighter disease management than Bermuda—especially under watering limits.

What’s the #1 sign I chose the wrong grass for my yard?
If your Bermuda stays thin in shade year after year, you’re fighting the grass’s biology. Texas A&M notes Bermuda struggles in moderate to dense shade.