Root Pest Library
Texas Lawn Pest and Lawn Care Guide
Updated June 14, 2026
A Texas lawn lives a hard life — brutal summer heat, drought one week and downpours the next, clay soils, and a long growing season that keeps both grass and pests active for most of the year. When patches go brown or thin, homeowners almost always reach for more water first, and almost as often that's the wrong move, because several of the most common lawn problems here mimic drought stress while having nothing to do with watering. This guide covers how Texas lawns actually fail and recover: the turf types and why St. Augustine dominates (and what makes it vulnerable), the lawn pests that do real damage — chinch bugs and fire ants chief among them — and how to tell a pest problem from a disease, a watering, or a soil problem. The core idea Root works from: you can't treat a lawn pest well without also reading the lawn, because the turf's health and its pest pressure are the same story.
Why St. Augustine rules Texas lawns — and where it's weak
Most established lawns across the Austin metro and into DFW are St. Augustine: it loves heat, tolerates some shade, and forms a thick carpet. But that same grass has specific vulnerabilities — it's the favorite target of chinch bugs, it's susceptible to fungal brown patch in humid conditions, and it browns fast under drought stress. Bermuda and zoysia show up too, each with their own quirks. Knowing your turf type is the starting point, because the same brown patch means different things on different grasses.
The "is it drought or something else?" problem
This is the single most useful diagnostic skill for a Texas lawn. Drought-stressed grass greens back up when you water it. If a brown or yellow patch doesn't recover with watering — or keeps spreading — the cause is something else: chinch bugs (hot, sunny areas), brown patch fungus (damp, shaded areas), grubs (turf that lifts up like loose carpet), or compacted/poor soil. Pouring on more water when the real problem is chinch bugs actually helps the pest. Matching the symptom to the true cause is what keeps a small dead spot from becoming a re-sod job.
Chinch bugs: the drought impostor
Chinch bugs are tiny insects that pierce St. Augustine blades and inject a toxin, killing turf in expanding patches through the hottest, sunniest parts of the yard — along sidewalks, driveways, and south-facing slopes where reflected heat bakes the grass. They're one of the most misdiagnosed lawn problems in Central Texas precisely because the damage looks like a watering issue. They peak in the hot months and spread outward from the original hot spot, so early detection is everything.
Fire ants: a turf problem and a usability problem
Fire ants don't kill a lawn the way chinch bugs do, but they make it unusable — and a single mound is the tip of a colony with multiple queens that rebuilds fast if you only knock down the top. They build telltale dome mounds that pop up overnight after rain, sting aggressively, and turn a barefoot backyard into a hazard. Like other ants, they're a baiting problem more than a spraying one; scattering the mound just relocates the colony.
The other lawn culprits: grubs, brown patch, and weeds
White grubs (beetle larvae) chew grass roots below the surface, leaving spongy turf that pulls up easily and brown areas that don't recover — a different fix entirely from chinch bugs. Brown patch and other fungal diseases thrive in humidity and overwatering, favoring damp and shaded areas (the opposite of chinch bugs' sunny zones). Weeds move into any turf that's already thin or stressed, which is why a thick, healthy lawn is itself the best weed control. Each of these calls for a different response, which is why correct diagnosis comes before treatment.
Healthy turf is the cheapest pest control
Most lawn pest problems start with stressed grass, and most turf stress traces back to watering, mowing, and soil. Deep, infrequent watering builds deeper roots than frequent shallow watering; mowing at the right height for your grass (St. Augustine likes it taller) shades out weeds and reduces stress; and Texas's compacted clay soils benefit from aeration so water and nutrients actually reach the roots. A lawn kept genuinely healthy resists chinch bugs, crowds out weeds, and bounces back from damage far faster than a stressed one — so fundamentals and pest control work together, not separately.
How Root treats the lawn as one system
Root's lawn care program works pest pressure and turf health together rather than as separate visits: distinguishing chinch bugs from drought, fungus, and grubs (which all look similar but need different fixes), treating to stop active damage, and supporting the fertilization, weed control, and soil conditions that keep turf resilient. Because Root's techs work these neighborhoods, they know the local St. Augustine lawns and the sunny, reflected-heat spots where chinch bugs hit first — and catching damage early, before a patch dies and needs re-sodding, is the whole game.
Frequently Asked Questions
Related Guides
Local Areas
Want it handled by a local Root technician?
We live in the same neighborhoods we serve.