How to Get Rid of Grubs in Your Spring TX Lawn
Grubs destroy lawns from below ground, which is why they are so easy to underestimate until the damage is already severe. By the time visible symptoms appear on the surface, the infestation has typically been active for weeks. Understanding what grubs are, what signs to look for, and how treatment timing works is the key to protecting your Spring TX lawn before the damage becomes expensive to repair.
Exo Services handles lawn care in Spring TX including grub control as part of integrated pest management programs. Here is what homeowners in this area need to know.
What Grubs Are: White Grubs and Japanese Beetle Larvae
When lawn care professionals talk about grubs, they are almost always referring to the larval stage of scarab beetles. In the Houston area and throughout Texas, the most common species are the Southern masked chafer and the June bug (Phyllophaga species). Japanese beetle grubs, while more prevalent further east, are increasingly common in North Texas and the greater Houston area.
The life cycle works like this: Adult beetles lay eggs in soil in late spring and early summer. Those eggs hatch into small, C-shaped white larvae in summer. The larvae feed aggressively on grass roots from summer through early fall, which is when damage becomes visible. As temperatures drop in fall, they move deeper into the soil to overwinter. They return to the root zone in spring before emerging as adults and repeating the cycle.
The larval feeding stage, specifically July through early October in the Spring TX area, is when your lawn is at risk. A population of 8 to 10 grubs per square foot is generally considered the damage threshold where treatment becomes necessary. Higher populations can destroy large turf areas in a matter of weeks.
Signs of Grub Damage in Your Lawn
Grub damage mimics several other lawn problems, which is why it is often misdiagnosed.
Brown patches despite adequate watering. This is the most common first sign. Areas of the lawn turn brown and do not respond to irrigation. Since the grubs have severed the root system, the grass cannot take up water regardless of how much is applied. This is the key distinction from drought stress: drought-stressed grass recovers with water; grub-damaged grass does not.
Spongy or loose turf. Heavily infested sections of turf can actually be lifted like a piece of carpet because the grubs have destroyed the root system that anchors the grass to the soil. Grab a section of the brown turf and pull. If it rolls back easily or comes up in sections, grub damage is the likely cause.
Increased bird, skunk, and armadillo activity. These animals are grub predators and will dig into infested turf to reach them. Scattered digging holes in the lawn, especially in otherwise undisturbed areas, can be a reliable indicator of grub activity below the surface.
Irregular pattern of damage. Drought stress tends to affect the entire lawn proportionally, hitting exposed or thin areas first. Grub damage often appears in specific patches, particularly in areas with moist soil where adult beetles prefer to lay eggs, near irrigation zones, low spots, or areas with heavy thatch.
Confirm by digging. If you suspect grubs, pull back a square foot of damaged turf and count the white larvae in the soil below. More than eight per square foot confirms the infestation.
Best Treatment Timing for Grub Control in Texas
Timing is the most critical factor in effective grub treatment, and this is where many DIY applications fail.
Preventive treatment (May through July). Preventive grub treatments use systemic insecticides that need to be applied before eggs hatch and larvae are small and actively feeding near the soil surface. Applied in late spring or early summer, these products are taken up by the turfgrass and remain active in the root zone when the larvae arrive. This is the lowest-impact, most effective approach when applied in the right window.
The catch with preventive treatment is that it requires action before you see any damage. If your lawn has had grub problems in previous years, or if you are finding adult beetles in large numbers on warm summer evenings, preventive treatment is the right call.
Curative treatment (August through September). If grub damage is already visible or population counts confirm an active infestation, curative insecticides are applied to kill existing larvae. These products work differently than preventive treatments and require specific application conditions, including adequate soil moisture, to move through the thatch layer and reach the grubs.
Curative treatments are less effective when applied too late in the fall after grubs have moved deep into the soil for overwintering. Acting in August and September gives the treatment the best chance of reaching feeding larvae before they go dormant.
Preventive vs. Curative Treatments: Which Do You Need?
The decision between preventive and curative depends on where you are in the season and what your lawn history shows.
If it is spring or early summer and you have no active infestation but have had grub problems before, preventive treatment is the right choice. It is lower cost, lower volume of product, and more effective than any curative option.
If it is late summer and you are seeing brown patches, loose turf, or digging activity, curative treatment is needed. Pair it with watering before and after application to drive the product into the root zone.
Regardless of which treatment is used, damaged areas will need weed control attention afterward. Bare and thin areas left by grub damage are immediately colonized by opportunistic weeds. Treatment of the grub problem and repair of the damaged turf are separate but related steps.
Call Exo Services for a Grub Inspection
If your lawn is showing signs of unexplained browning, you are seeing increased digging activity from wildlife, or you want to get ahead of a grub problem you have dealt with in prior seasons, the right first step is an inspection.
Exo Services assesses grub populations, evaluates damage extent, and recommends the appropriate treatment based on your timing and infestation level. We do not apply products unnecessarily, and we do not guess. Population counts and soil assessments guide the recommendation.
Contact us to schedule an inspection or call (832) 819-4442. The window for preventive treatment is open now. The window for effective curative treatment closes in October. Do not wait until the damage is too widespread to address efficiently.