Houston Lawn & Grass Pest Control Guide

In this guide on lawn and grass pest control, we teach you how to identify, treat, and prevent the most Common lawn pests and diseases in Texas. If you’ve ever walked outside, looked at your lawn, and thought something suddenly went wrong, lawn pests and grass diseases are often the hidden cause. In the Greater Houston area, insect activity is one of the most common reasons grass turns yellow, brown, patchy, or thin—even when you’re watering and maintaining it properly.

Houston’s hot, humid climate creates ideal conditions for pests to thrive. Warm temperatures speed up insect life cycles, while moisture from rain and irrigation provides the environment they need to reproduce quickly. Because of this, pest problems can escalate fast and spread across your lawn before you even realize what’s happening.

Effective lawn and grass pest control is not just about spraying products. It’s about understanding how your lawn functions as a system and applying the right treatment based on the specific issue. A healthy and well-maintained Houston lawn is naturally more resistant to pests, which is why pest control should always be part of a broader lawn care strategy.

The Most Common Lawn & Grass Pests in Houston

What makes pest control tricky is that the symptoms often look like other lawn issues. Brown spots, thinning grass, and dead patches can easily be mistaken for drought stress, disease, or poor soil conditions. Without identifying the actual cause, many homeowners end up treating the wrong problem.

The reality is that lawn pests attack your grass in different ways. Some feed on the blades above ground, while others destroy the root system below the surface. Many infestations also weaken your lawn enough to invite disease and weeds, making the damage worse over time and leading to dying grass. 

Houston lawns deal with several common pests that can quickly damage healthy grass if left untreated:

Chinch Bugs: 

Chinch Bugs are one of the most destructive pests for Bermuda and St. Augustine grass. They feed on grass blades and inject toxins that cause yellow patches, which quickly turn brown. Damage typically appears in sunny areas and spreads outward.

How to Get Rid of Chinch Bugs:

• Apply a targeted lawn insecticide specifically labeled for chinch bugs (liquid treatments tend to work faster than granular).
• Water lightly before application to bring bugs closer to the surface, improving treatment effectiveness.
• Mow and bag clippings before treatment to remove excess thatch where bugs hide.
• Repeat treatment in 7–14 days if activity persists.

How to Prevent Chinch Bugs:

• Avoid over-fertilizing, which attracts chinch bugs.
• Maintain proper mowing height (don’t scalp the lawn).
• Reduce thatch buildup to eliminate hiding areas.

Grubs:

Grubs are beetle larvae that live beneath the soil and feed on grass roots. This weakens the lawn, causing sections of turf to feel spongy or pull up easily. Severe infestations can lead to large dead patches and attract animals digging for food.

How to Get Rid of Grubs:

• Apply a curative grub control insecticide designed for active infestations.
• Water deeply after treatment to move the product into the root zone where grubs are feeding.
• Use beneficial nematodes as a natural control option for long-term effectiveness.

How to Prevent Grubs:

• Apply a preventative grub treatment in late spring to early summer before eggs hatch.
• Maintain a healthy lawn with proper watering and fertilization to reduce vulnerability.

Armyworms:

Armyworms are aggressive caterpillars that can destroy large areas of grass very quickly. They feed on grass blades and often move in groups, leaving behind rapidly thinning turf.

How to Get Rid of Armyworms:

• Apply a fast-acting lawn insecticide as soon as damage is noticed.
• Treat during early morning or evening hours when armyworms are most active.
• Water lightly after application to help activate the treatment.

How to Prevent Armyworms:

• Monitor your lawn closely during late summer and fall when infestations are most common.
• Keep your lawn healthy and properly maintained to reduce feeding opportunities.

Sod Webworms:

Sod webworms are small caterpillars that feed on grass at night and create silk tunnels in the lawn. Their activity leads to irregular brown patches and thinning turf.

How to Get Rid of Sod Webworms:

• Apply an insecticide in the evening when larvae are actively feeding.
• Use a soapy water flush test to confirm their presence before treatment.
• Repeat treatment within 10–14 days if necessary.

How to Prevent Sod Webworms:

• Maintain proper mowing and grass watering practices to reduce lawn stress.
• Encourage natural predators like birds to help control populations.

Fire Ants:

Fire ants create mounds that disrupt the lawn and can damage soil structure. While they may not always kill grass directly, they make outdoor spaces unsafe and can contribute to root disturbance.

How to Get Rid of Fire Ants:

• Use broadcast bait treatments to eliminate entire colonies rather than just visible mounds.
• Apply contact mound treatments for immediate control of active nests.
• Avoid disturbing mounds before treatment to prevent colony spread.

How to Prevent Fire Ants:

• Apply seasonal bait treatments in spring and fall.
• Keep lawn edges and landscaping beds well-maintained to reduce nesting areas.

Fungus Gnats (in beds and moist areas):

Fungus gnats are small insects that thrive in moist soil, particularly in overwatered lawns or garden beds. Their larvae feed on organic matter and plant roots, which can harm young or stressed plants.

How to Get Rid of Fungus Gnats:

• Allow soil to dry out between watering cycles to disrupt their lifecycle.
• Apply a diluted hydrogen peroxide solution to kill larvae in the soil.
• Use yellow sticky traps to capture adult gnats.

How to Prevent Fungus Gnats:

• Improve soil drainage and avoid overwatering.
• Remove decaying organic material that attracts gnats.

Lawn Diseases That Often Follow Pest Damage

Pests rarely act alone. When grass is weakened by insect activity, it becomes more vulnerable to fungal diseases, especially in humid conditions.

Brown Patch Disease:

Brown patch is a fungal lawn disease that appears as circular brown areas, often during cooler and wetter conditions. It spreads quickly in humid environments and is commonly mistaken for pest damage.

How to Treat Brown Patch Disease:

• Apply a fungicide labeled for brown patch at the first sign of infection.
• Water early in the morning only to reduce moisture buildup overnight.
• Avoid heavy nitrogen fertilization during active outbreaks.

How to Prevent Brown Patch Disease:

• Improve airflow and avoid excessive watering.
• Maintain proper mowing height to reduce lawn stress.
• Ensure irrigation systems are working properly and not overwatering specific areas.

Take-All Root Rot (TARR):

Take-all root rot is a serious fungal disease that attacks the root system, causing yellowing, thinning grass that does not respond to watering or fertilization. It is common in stressed lawns with poor soil conditions.

How to Treat Take-All Root Rot:

• Apply systemic fungicides designed for root diseases.
• Improve soil conditions with proper drainage and aeration.
• Adjust soil pH if necessary through professional soil treatment.

How to Prevent Take-All Root Rot:

• Avoid overwatering and poor drainage conditions.
• Maintain a balanced fertilization program without excessive nitrogen.
• Aerate your lawn regularly to improve oxygen flow to the root system.

Lawn Pest Control Costs in Houston

Lawn and Grass Pest Control Costs depend on the severity of the infestation and the size of your lawn:

• Basic treatments typically range from $75–$150+
• Ongoing pest control programs can range from $40–$100 per month
• Severe infestations may cost $150–$300+

Catching the problem early is always more affordable than repairing extensive damage.

Mastering Effective Lawn & Grass Pest Control 

A healthy lawn requires more than occasional watering and mowing. It depends on consistent care, proper soil conditions, and proactive pest control. When pests invade, they weaken your grass and create opportunities for disease, weeds, and long-term damage.

At GQ Landscaping & Lawn Care, we take a comprehensive approach to lawn health throughout the Greater Houston area. Instead of guessing, we identify the root cause of your lawn issues and build a plan that restores and protects your grass for the long term.

Whether you’re dealing with chinch bugs, grubs, or unexplained brown patches, our team provides the experience and solutions needed to bring your lawn back to life.

Call 346-345-3337 or complete our online form to schedule your free lawn evaluation and get expert help creating a healthier, pest-free lawn.