Identifying and Controlling Pests Before They Become a Problem

As spring arrives in San Antonio, homeowners look forward to lush, green lawns and vibrant landscapes. However, warmer temperatures also bring an increase in lawn pests that can quickly turn a healthy yard into a patchy, damaged mess. Identifying and controlling these pests early can prevent costly damage and keep your lawn looking its best.

Here’s a guide to common spring lawn pests in San Antonio and the best strategies to get rid of them before they become a problem.

1. Grubs (Lawn Beetle Larvae)

Identification: Grubs are white, C-shaped larvae that live underground and feed on grassroots. They cause brown, spongy patches of grass that pull up easily.

Control Methods:
✅ Apply beneficial nematodes – natural predators that feed on grubs.
✅ Use a grub-specific insecticide (apply in early spring before they mature).
✅ Keep lawns properly aerated and dethatched to disrupt their habitat.

2. Chinch Bugs

Identification: Tiny black bugs with white wings that suck moisture from grass blades, causing yellow-brown patches that resemble drought stress. They thrive in dry, sunny areas.

Control Methods:
✅ Water deeply but infrequently to discourage infestation.
✅ Remove excess thatch where chinch bugs hide.
✅ Use an insecticide labeled for chinch bug control if the problem persists.

3. Armyworms & Cutworms

Identification: These caterpillars chew grass blades down to the soil, creating bare spots or brown patches. They are most active in the early morning or evening.

Control Methods:
✅ Apply Bacillus thuringiensis (Bt), a natural, safe pesticide for caterpillars.
✅ Encourage natural predators like birds and beneficial insects.
✅ Remove thatch and mow regularly to disrupt their habitat.

4. Fire Ants

Identification: Fire ants create visible mounds in the lawn and deliver painful stings. Their colonies can quickly overtake a yard.

Control Methods:
✅ Use bait treatments (granules) that worker ants carry to the colony.
✅ Apply boiling water directly on mounds for a natural approach.
✅ Spread an insecticide across the lawn for long-term prevention.

5. Sod Webworms

Identification: Small caterpillars that chew grass blades, creating scalped patches. You may notice moths flying low over the lawn at dusk.

Control Methods:
✅ Reduce lawn thatch to eliminate hiding spots.
✅ Apply insecticidal soap or Bt for natural control.
✅ Water and fertilize properly to encourage lawn recovery.

6. Whiteflies

Identification: Tiny, white insects that feed on grass and ornamental plants, often causing yellowing and curling of leaves.

Control Methods:
✅ Spray plants with a strong stream of water to remove them.
✅ Use insecticidal soap or neem oil for organic control.
✅ Encourage natural predators like ladybugs.

7. Mole Crickets

Identification: Large, brown crickets that tunnel through soil, uprooting grass and creating soft, uneven patches.

Control Methods:
✅ Use soapy water to flush them out (mix dish soap and water, then pour over affected areas).
✅ Apply granular insecticide for severe infestations.
✅ Keep soil aerated and well-drained to deter them.

Preventing Spring Lawn Pest Infestations

A healthy lawn is the best defense against pests. Follow these lawn care tips to minimize infestations:
Mow at the correct height – Taller grass shades the soil, reducing pest populations.
Water properly – Deep, infrequent watering encourages strong root growth and deters pests.
Dethatch & aerate – Prevents pests from hiding in thick grass layers.
Encourage beneficial insects – Ladybugs, birds, and nematodes naturally reduce pest numbers.

At DNS Landscaping, we specialize in lawn care and pest control solutions for San Antonio homeowners. If you’re struggling with spring lawn pests, we can help you restore and maintain a healthy landscape.

Contact us today for a professional lawn inspection and treatment plan!