The Most Common Lawn Pests in Winter And How to Protect Your Lawn

Intro

While winter may seem like a quiet time for your lawn, several pests remain active beneath the surface, feeding on roots, stems and leaves. Many homeowners assume insects disappear during the colder months, but some pests actually thrive in cooler conditions or remain hidden until spring.

Knowing what to look for can help you stop minor damage from becoming a major lawn renovation.

 

The Most Common Lawn Pests in Winter And How to Protect Your Lawn

1. African Black Beetle

Although adult African Black Beetles are most active during the warmer months, their larvae (commonly called curl grubs) can remain in the soil throughout winter.

Signs of infestation:

  • Yellow or brown patches that don’t improve with watering
  • Turf lifting easily from the ground
  • Birds digging holes looking for grubs
  • Grass feeling soft or spongy underfoot

How to manage them:

If you suspect curl grubs, gently lift a section of turf and inspect the soil underneath. Beneficial nematodes or registered lawn grub treatments can help reduce populations before spring.

 

2. Curl Grubs

Curl grubs are one of the most destructive lawn pests because they feed directly on grass roots.

Symptoms include:

  • Large dead patches
  • Grass pulling away like loose carpet
  • Increased bird activity
  • Slow recovery after rain

Winter is a good time to monitor grub numbers before they become more active as temperatures rise.

 

3. Billbugs

Billbugs are weevils that lay eggs inside grass stems. Their larvae feed below the surface, damaging crowns and roots.

Look for:

  • Small brown patches that gradually spread
  • Weak grass that snaps easily near the base
  • Patchy thinning across the lawn

Buffalo and Kikuyu lawns can both be affected.

 

4. Argentine Stem Weevil

This small insect attacks the stems of turf grasses, particularly ryegrass and couch varieties.

Common symptoms:

  • Yellow streaks
  • Thin patches
  • Grass that dies from the centre out

Regular mowing and maintaining healthy turf helps reduce the impact.

 

5. Lawn Armyworms (Occasionally Active)

Although armyworms are primarily a summer pest, mild Australian winters can allow small populations to survive.

Signs include:

  • Grass blades chewed overnight
  • Ragged edges on leaves
  • Birds feeding heavily on the lawn

Early detection is the key to preventing widespread damage.

 

6. Slugs and Snails

Cool, damp winter conditions create the perfect environment for slugs and snails.

While they don’t usually destroy established lawns, they can damage:

  • Newly laid turf
  • Fresh shoots
  • Young garden plants bordering your lawn

Reducing excess moisture and removing hiding places helps keep numbers down.

 

How to Prevent Winter Lawn Pest Problems

The healthiest lawns are naturally more resistant to pests. During winter you should:

✅ Continue mowing when needed (slightly higher than summer)
✅ Avoid overwatering
✅ Improve drainage in wet areas
✅ Remove excess thatch
✅ Feed with a suitable slow-release winter fertiliser
✅ Inspect your lawn regularly for early signs of damage

Early treatment is always easier and more affordable than repairing large damaged areas later.

Choose Quality Turf for a Stronger Lawn

Premium turf varieties develop stronger root systems and better overall resilience, helping them recover more quickly from insect damage.

At Greener Lawn Supplies, we grow and supply premium farm-fresh turf varieties including:

  • Sir Walter DNA Certified Buffalo
  • Stampede Hybrid Buffalo
  • Sir Grange Zoysia
  • Zoysia Australis
  • TifTuf Hybrid Bermuda
  • Eureka Kikuyu

Our experienced team can also help identify lawn problems and recommend the best solution before pests cause lasting damage.

 

Need Advice?

If you’ve noticed brown patches, thinning grass or unexplained lawn damage this winter, contact Greener Lawn Supplies for expert advice. We’ll help identify the cause and recommend the best treatment so your lawn is ready to thrive when spring arrives.

A healthy lawn starts with the right turf, proper care and early pest management.

Contact our team for expert advice Message Us or call 1800 473 363