Lawn Care

Washington, Michigan – Effective Treatment for Sod Webworms

Noah Dolce, Lawn Care Specialist | Aug 13, 2025

Tags: Lawn Insects, Lawn Maintenance

Supporting image for blog post: Washington, Michigan – Effective Treatment for Sod Webworms

Sod webworm adult moth.|Keshava Mysore, Bugwood.org

Sod webworms are a common pest issue for homeowners in Washington, Michigan, especially during the hot summer months. These caterpillar larvae feed on grass blades, creating brown patches and causing significant damage if left untreated. Early detection and prompt treatment are key to controlling these pests and preserving the health and beauty of your lawn.

Watch for signs of sod webworm activity in your lawn, such as small irregular patches of dead or yellowing grass and the presence of tiny webs. The patches will be roughly circular in shape. Grass blades will be chewed down or missing completely. If you spot these symptoms, take immediate action to address the infestation.

Natural solutions like nematodes can sometimes be effective in controlling a small sod webworm infestation. These microscopic worms attack and kill the larvae in the soil, offering an eco-friendly option for treatment. Alternatively, chemical insecticides containing ingredients like carbaryl or cyfluthrin can be used for more severe infestations, but be sure to follow all application instructions.

Maintaining a healthy lawn is also a crucial preventative measure. Mowing your grass to an appropriate height, watering regularly, and fertilizing at the right times can strengthen your lawn and make it less inviting to sod webworms. Annual lawn aeration, in either the spring or fall, will build a better root system in your lawn. With these steps, you can enjoy a lush, healthy yard while minimizing the risk of pest damage.

If you suspect sod webworm, contact Owen Tree & Lawn Care to have your lawn inspected before the problem gets out of control.

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