---
title: "Grub worms in Georgetown lawns · Georgetown Lawn Guide"
description: "Patches that peel up like carpet, plus skunks digging at night, point to white grubs. The Central Texas scouting window, dig test, and when to treat."
canonical: https://georgetownlawnguide.com/guides/grub-worms-georgetown/
source: https://georgetownlawnguide.com/guides/grub-worms-georgetown/
---

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# Grub worms in Georgetown lawns

[Reviewed against Texas A&M AgriLife Extension](/about-this-guide/) Last updated June 2026

![Three white C-shaped grub larvae with tan-brown heads, curled in the classic grub posture against a wood surface.](/_astro/white-grubs-soil.y_Jl2sRK_Z291R0D.webp "Three white C-shaped grub larvae with tan-brown heads, curled in the classic grub posture against a wood surface.")

White grubs are the larval stage of May and June beetles. The curled, C-shaped body and tan-brown head are the identifying marks. They feed on grass roots below the surface, which is why grub-damaged turf lifts off the soil like a loose carpet.

Photo: Rasbak / Wikimedia Commons — [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) ( [source](https://commons.wikimedia.org/wiki/File:Meikeverlarven_\(Melolontha_melolontha\).jpg) )

## Patches peeling up like carpet? Suspect grubs.

The signature of a grub problem is turf that lifts off the soil like loose carpet, because the grubs have eaten the roots underneath, often paired with skunks or armadillos digging up the lawn at night to feed on them. White grubs are the larval stage of May and June beetles, and they damage Central Texas lawns from summer into fall. Confirm by cutting a square-foot flap of sod and counting the C-shaped larvae below. [Texas A&M AgriLife Extension — White Grubs in Texas Turfgrass](https://agrilifeextension.tamu.edu/asset-external/white-grubs-in-texas-turfgrass/)

Grubs are easy to misread because the patches look like drought at first. The difference is what happens when you tug the grass: a grub-eaten patch has no roots holding it down, so it rolls back like a rug. If you are also seeing fresh digging or small cone-shaped holes in the morning, that is wildlife hunting the grubs, and it is one of the most reliable signs you have them.

![A patch of home lawn torn up and dug open, with loose soil and uprooted grass, the kind of damage left when animals dig for grubs.](/_astro/grub-damage-lawn.31_js-ni_173VQw.webp "A patch of home lawn torn up and dug open, with loose soil and uprooted grass, the kind of damage left when animals dig for grubs.")

Grub damage in a home lawn: turf torn open and dug up. When skunks, armadillos, or birds work a lawn like this overnight, they are after the grubs feeding on the roots below.

Photo: NYSIPM Image Gallery (Cornell) — [CC BY 2.0](https://creativecommons.org/licenses/by/2.0/) ( [source](https://www.flickr.com/photos/99758165@N06/17232629286) )

## When do grubs damage a Georgetown lawn?

Adult May and June beetles emerge and lay eggs through the summer. Damaging grubs hatch in late May in South Texas and into July in North Texas, and Georgetown sits between the two, so the key egg-lay and early-development window runs through June and July. Scouting and preventive treatment belong in that mid-summer window, before the larvae grow large enough to do serious root damage later in the season. [Texas A&M AgriLife Extension — White Grubs](https://aggieturf.tamu.edu/turfgrass-insects/white-grubs/)

Timing is the whole game with grubs. Small, freshly hatched grubs near the surface in early to mid summer are easy to control. The same grubs in late summer are larger, deeper, and far harder to kill, and by then the root damage is often already done. AgriLife pegs the ideal treatment near hatch, which is June in South Texas and early July in North Texas: Georgetown’s June to July window splits the difference. This lines up with the pest notes in the [AgriLife Bermudagrass lawn management calendar](https://agrilifeextension.tamu.edu/wp-content/uploads/2023/08/ESC-042-bermudagrass-lawn-management-calendar.pdf).

## How do you confirm grubs, and how many is too many?

Cut a flap of turf about one square foot and two to three inches deep at the edge of a struggling patch, fold it back, and count the white C-shaped grubs in the root zone. The treatment threshold is 5 to 10 grubs per square foot. Below that, a healthy lawn tolerates them and no treatment is needed; above it, treatment is justified. [Texas A&M AgriLife Extension — White Grubs](https://aggieturf.tamu.edu/turfgrass-insects/white-grubs/)

You have to dig, because grubs live below ground and surface damage alone does not confirm them. Check two or three spots at the edge of the dying area, where grubs are actively feeding, rather than dead center where they may have already moved on.

White grubs in a Georgetown lawn at a glance

Factor

Detail

Scouting window

June to early July, at egg hatch and early larval stage

Test method

Cut and fold back a 1 sq ft flap of sod, 2–3 in deep; count grubs

Treatment threshold

5–10 grubs per square foot

Signature damage

Turf lifts like loose carpet; roots gone

Secondary sign

Skunks or armadillos digging the lawn at night

Do not blanket-spray below threshold

Grub populations frequently fall under the 5 to 10 per square foot threshold, and a healthy lawn shrugs those off. Treating a lawn that does not have a real infestation wastes money and kills the beneficial soil life that keeps pests in check. Confirm the count first, then decide.

## Grubs, drought, chinch bugs, or disease?

Match the clue to the cause. Grub patches peel up like carpet and attract digging animals. Drought is a uniform blue-gray wilt that recovers with water, with no patches or digging. Chinch bugs spread in hot, dry summer heat with the roots intact, confirmed by the coffee-can test. Fungal disease rots the plant: take-all leaves blackened roots, and brown patch makes circular rings where shoots pull from the sheath. [Texas A&M AgriLife Extension — St. Augustinegrass Lawn Management](https://agrilifeextension.tamu.edu/wp-content/uploads/2025/07/St.-Augustinegrass-Lawn-Management.pdf)

The four big lawn killers in Williamson County overlap visually but separate cleanly on a closer look. If the roots are gone and the turf lifts, it is grubs. If the roots are intact and it is high summer, work through the [chinch bug guide](/guides/chinch-bugs-georgetown/). If patches showed up in cool, wet spring or fall weather, read the [brown patch and take-all guide](/guides/brown-patch-take-all-georgetown/) instead. And if the grass simply browned out evenly in heat, it is probably watering, covered in the [Georgetown watering guide](/watering-georgetown-tx/).

## How and when do you treat for grubs?

There are three tiers. Preventive treatment goes down in the June to July hatch window in lawns with a history of grubs. Curative treatment is for when scouting confirms active grubs above threshold but before major damage. Rescue treatment is a reaction after the turf is already dying, and it is the least effective because the grubs are large and the roots are gone. Always confirm a count first, then follow the product label exactly. [Texas A&M AgriLife Extension — White Grubs in Texas Turfgrass](https://agrilifeextension.tamu.edu/asset-external/white-grubs-in-texas-turfgrass/)

The practical rule: prevention beats rescue, and timing beats product choice. A treatment matched to the early-summer hatch window works far better than a stronger product applied in September. A lawn kept dense and deeply rooted, watered and mowed well, also recovers from minor grub feeding without any treatment at all. An operator who treats lawns, not just mows them, can confirm the count and time the application to the window.

## Turf peeling up and animals digging at night?

That pairing is the clearest sign of a grub infestation: the roots are gone, so the turf rolls back like a rug, and skunks or armadillos dig at night to eat the larvae. Confirm with the square-foot dig test, and if the count is above 5 to 10 per square foot, get matched with a Georgetown operator who can confirm grubs and treat in the right window. [Texas A&M AgriLife Extension — White Grubs in Texas Turfgrass](https://agrilifeextension.tamu.edu/asset-external/white-grubs-in-texas-turfgrass/)

Timing the treatment to the June-to-July hatch is what makes it work, and an operator who treats lawns, not just mows them, can confirm the count and apply at the right moment. [Get free quotes from a Georgetown operator](/operators/), or if you are not yet sure grubs are the cause, work through the whole lawn with the [lawn diagnosis guide](/guides/why-is-my-lawn-dying-georgetown/) first.

## Why trust this guide

Care guidance on this site cites Texas A&M AgriLife Extension. We are an independent guide, not a lawn-care operator, and we connect you with vetted local operators who do the work.