How to Identify, Prevent and Control Armyworms in Your Lawn
Armyworms are common lawn and garden pests that can cause significant damage to grass, crops and other vegetation. These caterpillars feed on grass blades and can quickly leave affected lawns looking patchy, brown and unhealthy when infestations become severe.
Armyworms can be found in various lawn types, including Bermuda grass (couch grass). One of the first signs of an armyworm infestation is the appearance of small patches of brown or damaged grass. When you look closely, you may notice chewed or ragged edges along the grass blades.
Early identification is important because armyworms can feed rapidly, particularly when large numbers are present. Regularly inspecting your lawn for unusual discolouration, damaged grass blades and caterpillar activity can help you identify potential problems before extensive damage occurs.
Common Signs of Armyworm Damage
Armyworm infestations can sometimes be mistaken for lawn diseases, drought stress or other common grass problems. However, there are several warning signs that may indicate their presence.
- Brown or thinning patches appearing across the lawn.
- Grass blades with chewed, uneven or ragged edges.
- Small caterpillars hiding near the soil surface or among the grass.
- Increased feeding activity during the evening or early morning.
- Rapid deterioration of previously healthy lawn areas.
Checking affected areas carefully can help determine whether armyworms or another lawn problem are responsible for the damage.
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Prevention and Maintenance
Early detection is still one of the best ways to minimise damage caused by armyworms and other lawn pests. Regular lawn inspections, appropriate mowing and good lawn maintenance practices can help you recognise potential infestations before they spread.
Maintaining healthy grass through suitable watering, fertilising and mowing can also support lawn recovery after minor pest damage. Avoid cutting your lawn too short, as stressed grass may struggle to recover from heavy feeding.
Where armyworm activity is confirmed, appropriate pest management methods may be required. Depending on the severity of the infestation, treatment options can include targeted biological controls or insecticides specifically approved for armyworm control. Always follow product label directions and consider the safety of children, pets and beneficial insects.
Professional Lawn Care and Armyworm Management
A healthy, well-maintained lawn is easier to monitor for signs of pests and other common gardening problems. Regular mowing, proper watering and seasonal lawn care can help improve grass health and reduce the impact of environmental stress.
At Fox Mowing & Gardening, our experienced team can assist with general lawn maintenance and help you identify visible signs of lawn damage. Whether your grass is developing brown patches, showing signs of pest activity or simply needs regular care, professional gardening advice can help you determine the next steps.
For assistance with lawn maintenance and advice on managing armyworm damage, contact your local Fox Mowing team today. We’re here to help keep your lawn healthy, tidy and looking its best.
