Cranberry Girdler & Turf Damage

What is a Cranberry Girdler?  Depending on when you might see it during it’s life cycle, it could either look like a grub, or a moth.

Cranberry Girdler Larvacranberry girdler

Cranberry Girdler Adult

girdler adult


Cranberry girdlers are actively feeding on lawns in the Treasure Valley and causing major turf damage! Cranberry girdler is also known as the subterranean webworm. Cranberry girdler larvae can kill turfgrass by chewing on the roots or by destroying the crowns of the grass.

Damage symptoms look very similar to Billbug damage where the turf becomes loosely attached to soil and pulls up like carpet. The first sign of girdler caused injury to turf is small brown patches in late summer when the larvae is near maturity. Major infestations can quickly accelerate damage and can kill large areas of turf within no time.

Healthy grass can tolerate low to moderate infestations of cranberry girdler damage and will recover if properly watered and fertilized. Cranberry girdler is a difficult insect to detect until the damage appears. They typically feed at or below the thatch layer. Most home owners in the Treasure Valley apply a preventative bill bug treatment in late May/June, but this application will have zero effect on cranberry girdlers.

Don’t let these grubs take away your beautiful lawn. No lawn is safe when it comes to these damage causing grubs. If you notice your lawn turning brown with proper watering, do not worry we can get your lawn back with our specialized products and customized lawn care program!

Please request a free analysis and quote through our website or give us a call at #208-939-8469.

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