Maintaining a healthy lawn in West Palm Beach can be challenging. South Florida’s warm temperatures, seasonal rainfall, humidity, irrigation, and long growing season create favorable conditions for turfgrass—but those same conditions also support insects that feed on grass, roots, stems, and soil.

Some of the most important lawn pests in West Palm Beach include southern chinch bugs, mole crickets, tropical sod webworms, white grubs, lawn caterpillars, and fire ants. These pests can produce yellowing, thinning turf, irregular brown patches, damaged roots, and, in severe cases, complete areas of dead grass.

The challenge is that insect damage can look very similar to drought stress, irrigation problems, nutrient deficiencies, and lawn disease. Effective lawn pest control therefore starts with identifying the cause of the damage before selecting a treatment.

Homeowners experiencing unexplained turf damage can contact Drake Lawn & Pest Control’s West Palm Beach lawn care team for a professional inspection. Drake provides lawn care throughout West Palm Beach and surrounding Palm Beach County communities, including Wellington, Lake Worth, Boynton Beach, Boca Raton, Palm Beach Gardens, Jupiter, Delray Beach, and Royal Palm Beach.

Why Are Lawn Pests Common in West Palm Beach?

South Florida lawns grow in an environment that allows many insects to remain active for extended periods.

Unlike regions that experience prolonged winter freezes, West Palm Beach’s subtropical climate allows certain lawn pests to survive or remain active for much of the year.

St. Augustinegrass is especially important in Florida landscapes. According to the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), it is the most widely planted turfgrass species in Florida. It is well adapted to Florida conditions, but it is also vulnerable to several insect pests—particularly southern chinch bugs.

Other turfgrass species used in South Florida, including zoysiagrass, bermudagrass, and bahiagrass, have their own pest vulnerabilities.

UF/IFAS identifies chinch bugs, white grubs, mole crickets, webworms, armyworms, spittlebugs, ground pearls, and billbugs among the major insect pests capable of affecting Florida turfgrass.

For West Palm Beach homeowners, understanding which insect is actually damaging the lawn is the first step toward controlling it.

1. Southern Chinch Bugs

For homeowners with St. Augustinegrass, southern chinch bugs are one of the most important lawn pests to watch for.

UF/IFAS describes the southern chinch bug as the most damaging insect pest of turfgrass in Florida and the most important insect pest of St. Augustinegrass.

What Do Chinch Bugs Do to a Lawn?

Chinch bugs use piercing-sucking mouthparts to feed on grass.

As an infestation progresses, affected turf may:

• Turn yellow
• Develop reddish or brown coloration
• Become dry or wilted
• Develop expanding dead patches
• Eventually die in severely affected areas

Damage commonly begins in sunny or water-stressed sections of the lawn, including areas near sidewalks, driveways, buildings, and other hot surfaces.

UF/IFAS notes that chinch bugs are particularly active during warm weather and may cause damage throughout the year in South Florida. Severe damage in southern portions of the state is frequently associated with the period from March through November.

How Can You Tell If Chinch Bugs Are Causing Brown Grass?

One of the most important points for homeowners is:

• Brown grass does not automatically mean chinch bugs.
• Drought, poor sprinkler coverage, root disease, fungal problems, excessive thatch, and other insects can create similar symptoms.
• When chinch bugs are responsible, insects are often found along the transition between healthy green turf and damaged brown turf rather than in the center of an already dead area.
• UF/IFAS provides additional identification and management information in its Southern Chinch Bug guide.
• Professional lawn inspections can be especially useful when symptoms overlap.

Drake’s lawn care service specifically includes insect control and treatment for chinch bugs as part of its lawn-care program.

2. Mole Crickets

Mole crickets cause lawn damage differently from chinch bugs because much of their activity occurs beneath the soil surface.

These insects have powerful front legs designed for digging. As they move through the soil, they create tunnels while feeding on turfgrass roots and shoots.

UF/IFAS identifies three invasive mole cricket species as important Florida pests:

• Tawny mole cricket
• Southern mole cricket
• Short-winged mole cricket

Mole crickets can damage several types of turfgrass, although bahiagrass and bermudagrass can be particularly susceptible.

Signs of Mole Cricket Damage

A lawn with mole crickets may develop:

• Irregular brown patches
• Soft or loose soil
• Small soil mounds
• Surface tunnels
• Grass that separates from the soil
• Damaged or weakened roots
• Areas where weeds replace damaged turf

Mole cricket activity can sometimes cause a secondary problem.

Birds, raccoons, armadillos, and other animals may dig into lawns searching for the insects, potentially causing additional turf damage.

UF/IFAS notes that mole crickets are active throughout the year in Florida, with significant activity and damage occurring during portions of the spring and fall.

Homeowners can learn more through UF/IFAS’s Mole Cricket information.

3. Tropical Sod Webworms

Another insect that deserves particular attention in South Florida is the tropical sod webworm.

Tropical sod webworms are caterpillars that feed on turfgrass leaves.

Although they can attack several grass species, UF/IFAS notes that they prefer St. Augustinegrass. They can also feed on:

• Bermudagrass
• Bahiagrass
• Centipedegrass
• Zoysiagrass

Unlike many regions where these insects are primarily seasonal, UF/IFAS reports that tropical sod webworms can be found year-round in South Florida.

What Does Sod Webworm Damage Look Like?

The adult is a small tan moth, but the moth itself does not cause significant turf damage.

The caterpillar stage feeds on grass.

Signs can include:

• Grass blades that appear chewed or shortened
• Thin patches
• Brown or irregular areas
• Rapid deterioration of stressed turf
• Small moths flying from the grass as you walk across the lawn

The caterpillars often feed during the evening, nighttime, and early morning.

A few sod webworms do not necessarily mean that significant treatment is required. Healthy turf can tolerate some feeding, and beneficial insects and spiders naturally prey on the caterpillars.

UF/IFAS recommends correctly identifying the pest and treating only when appropriate rather than automatically applying insecticides to the entire lawn.

More information is available in the UF/IFAS Tropical Sod Webworm guide.

4. White Grubs

Not every lawn pest feeds above the soil.

White grubs are the larvae of scarab beetles, and they live around the soil and thatch layer where they feed on turfgrass roots.

White grubs can affect different turfgrass species in Florida.

Early damage can be difficult to diagnose because affected areas may simply appear yellow or stressed.

As root feeding becomes more severe, homeowners may notice:

• Yellowing turf
• Wilting
• Large patches of dead grass
• Turf that feels loose or spongy
• Grass that pulls away from the soil easily
• Birds or animals digging into the yard

UF/IFAS notes that serious grub damage can become particularly noticeable when turf is already experiencing drought or other environmental stress. Some grub species can also be particularly damaging in coastal areas.

One way to investigate suspected grub damage is to carefully lift a section of affected sod. A lawn with severe root feeding may separate from the soil unusually easily.

See UF/IFAS’s White Grubs in Florida Lawns for additional identification information.

5. Armyworms and Other Lawn Caterpillars

Tropical sod webworms are not the only caterpillars capable of feeding on Florida turf.

Armyworms and other lawn caterpillars can remove significant amounts of grass foliage when populations become large.

Rather than feeding on roots, these pests consume the visible portions of the grass.

Damage may appear as:

• Closely cropped turf
• Thin areas
• Brown areas
• Bare spots
• Large areas of relatively uniform damage

UF/IFAS notes that fall armyworms may feed on a variety of grasses, including bermudagrass. Despite the name “fall armyworm,” turf damage is not restricted exclusively to fall.

Because caterpillar populations can change quickly, determining what is actually present in the turf is important before deciding whether control is necessary.

6. Fire Ants

Fire ants are somewhat different from chinch bugs or webworms because they generally do not destroy a lawn by feeding extensively on grass.

However, they can still become a significant lawn pest problem in West Palm Beach.

Fire ant colonies can create visible mounds throughout yards and landscaped areas. When disturbed, workers aggressively defend the colony and can deliver painful stings.

This makes fire ants particularly problematic around:

• Play areas
• Walkways
• Patios
• Pool areas
• Pet areas
• Frequently used sections of the yard

Drake’s lawn-care program includes fire ant control as part of both its initial and regular lawn service.

Is It an Insect Problem—or Something Else?

One of the biggest mistakes in lawn care is assuming that every patch of brown grass requires an insecticide.

It doesn’t.

Many problems can produce symptoms similar to lawn pest damage, including:

• Improper irrigation
• Drought stress
• Overwatering
• Fungal disease
• Take-all root rot
• Gray leaf spot
• Nutrient deficiencies
• Herbicide injury
• Excessive thatch
• Poor soil conditions
• Mowing stress
• Pet damage

For example, UF/IFAS warns that not all brown St. Augustinegrass indicates chinch bugs. Proper identification is essential before choosing a treatment.

This is also one reason an integrated lawn program can be more effective than repeatedly treating visible symptoms.

Proper Irrigation Is Part of Lawn Pest Management

Watering and lawn pest control are more closely connected than many homeowners realize.

Too little water can stress turf, making it less capable of tolerating insect feeding. But excessive irrigation can also create problems.

Poor irrigation practices can contribute to:

• Weak root systems
• Excessive thatch
• Lawn disease
• Turf stress
• Uneven lawn growth
• Conditions favorable to certain insects

Drake notes that excessive watering can weaken turf and contribute to insect and disease susceptibility. Its lawn-care approach emphasizes proper irrigation alongside fertilization, weed management, disease control, and insect management.

If sections of your lawn stay excessively wet while others remain dry, the problem may involve sprinkler coverage rather than lawn pests.

Drake also provides irrigation repair and maintenance services that include checking sprinkler heads, controllers, pipes, rain sensors, coverage, and other components.

How to Make a West Palm Beach Lawn More Resistant to Pests

No lawn is completely immune to insect activity, but healthy turf is generally better positioned to tolerate moderate pest pressure.

UF/IFAS emphasizes cultural practices as an important component of Florida lawn pest management.

West Palm Beach homeowners can help reduce lawn stress by focusing on several fundamentals.

Water Correctly

Avoid shallow, frequent irrigation and avoid keeping turf continuously saturated.

Watering should be based on the needs of the lawn rather than automatically applying water every day.

Mow at the Proper Height

Cutting grass too short can stress the turf and weaken its ability to recover from insect feeding.

The correct mowing height depends on the turfgrass species and cultivar.

Avoid Excessive Fertilization

More fertilizer does not necessarily mean healthier grass.

Overfertilization can produce excessive growth and thatch and may increase susceptibility to certain pest problems.

Manage Thatch

A thick thatch layer can provide habitat for insects and interfere with the movement of water into the soil.

Inspect Brown Areas Early

Do not wait for a small patch to spread across the lawn.

Inspecting the border between healthy and declining turf can sometimes reveal insects before significant damage occurs.

Treat the Correct Pest

Different insects require different management strategies.

An application designed for one lawn pest may have little effect on another. Treatment timing can also be critical because some insect life stages are easier to control than others.

Why Preventive Lawn Pest Management Matters in South Florida

West Palm Beach’s climate means lawn care is rarely a once-a-year project.

UF/IFAS reports that chinch bugs may cause damage year-round in South Florida, while tropical sod webworms can also be present throughout the year. Mole crickets remain active year-round in Florida as well.

That does not mean homeowners should continuously apply insecticides.

Instead, an effective program should combine:

Monitoring + proper identification + healthy turf practices + appropriately timed treatment when necessary.

This approach aligns with Integrated Pest Management principles by focusing treatment where it is justified rather than automatically treating every lawn problem as an insect infestation.

Professional Lawn Pest Control in West Palm Beach, FL

Lawn pest control in West Palm Beach requires understanding both the insect and the turf it is damaging.

Southern chinch bugs may attack St. Augustinegrass. Mole crickets can tunnel through roots and soil. Sod webworms and other caterpillars feed on grass blades. White grubs attack roots below ground. Fire ants establish colonies throughout lawns and landscaped areas.

At the same time, irrigation problems, diseases, nutrients, and environmental stress can mimic insect damage.

That is why professional lawn care begins with diagnosis.

Drake Lawn & Pest Control’s professional lawn care program includes seasonally adjusted applications, weed control, fertilization, fire ant and flea control, fungus and disease management, and control of lawn- and shrub-damaging insects.

Drake’s West Palm Beach branch provides lawn-care services throughout Palm Beach County and offers a lawn and shrub replacement guarantee for plants lost to insect infestation while covered under its service.

If you are seeing brown patches, thinning grass, insect activity, damaged roots, or other unexplained lawn problems, schedule an inspection with Drake’s West Palm Beach lawn pest control team to identify the cause and determine the appropriate next step.

Frequently Asked Questions About Lawn Pest Control in West Palm Beach

What are the most common lawn pests in West Palm Beach?

Southern chinch bugs, mole crickets, tropical sod webworms, white grubs, lawn caterpillars, and fire ants are among the pests West Palm Beach homeowners may encounter. The exact pest pressure depends on turf type, season, irrigation, environmental conditions, and lawn health.

What is the worst pest for St. Augustine grass in Florida?

The southern chinch bug is considered the most important insect pest of St. Augustinegrass in Florida. UF/IFAS states that severe infestations can cause expanding yellow, reddish-brown, and eventually dead areas of turf.

Are chinch bugs common in West Palm Beach?

South Florida’s warm climate allows chinch bugs to remain active for extended periods. UF/IFAS reports that they may cause damage year-round in South Florida, although pest pressure can vary depending on weather and lawn conditions.

Why is my St. Augustine grass turning brown?

Brown St. Augustinegrass can be caused by chinch bugs, drought stress, improper sprinkler coverage, excessive moisture, disease, nutrient problems, mowing stress, or other factors. Proper diagnosis should occur before applying pesticides or other treatments.

What do mole crickets do to a lawn?

Mole crickets tunnel beneath the turf and feed on roots and grass tissue. Their tunneling can separate turfgrass roots from the soil, producing loose soil, brown patches, damaged roots, and dying grass.

What are the small moths flying out of my lawn?

Small tan moths that fly out of the grass when you walk across a South Florida lawn may be adult tropical sod webworm moths. The adults are not responsible for most of the turf damage; their caterpillars feed on grass blades.

Can lawn pests be active year-round in West Palm Beach?

Yes. South Florida’s subtropical climate allows some turf pests to remain active for much of the year. UF/IFAS specifically notes the potential for year-round activity or damage from pests such as tropical sod webworms and southern chinch bugs in South Florida.

Does watering prevent lawn pests?

Proper irrigation can help maintain healthier turf, but excessive or insufficient watering can contribute to lawn stress. Water management should be considered alongside mowing, fertilization, pest monitoring, disease management, and other turf-care practices.

Should I treat my lawn as soon as I see a brown spot?

Not necessarily. Brown turf can result from insects, disease, irrigation problems, drought stress, nutrient issues, or other causes. Identifying the problem before treatment helps avoid unnecessary pesticide use and makes it more likely that the actual cause will be corrected.

When should I call a lawn pest control company?

Consider a professional inspection when brown or thinning areas continue to expand, insects are visible, turf pulls away from the soil, unexplained tunnels or soil mounds appear, or the lawn does not improve after irrigation and maintenance problems have been addressed.