When high populations of Christmas beetle grubs are present, how does the resulting dead turf appear to a homeowner?
Answer
It results in large, irregular patches of dead or dying grass that can be lifted easily, much like a piece of carpet.
The damage caused by subterranean grub populations presents a very distinct visual symptom in lawns. Because the grubs consume the roots of the grasses, the turf loses its necessary anchor and support system. This manifests as large, irregular areas where the grass dies. The lack of root structure means that these dead sections are no longer firmly attached to the soil beneath them. Consequently, a person can often peel back or lift these damaged sections with minimal effort, making them resemble a piece of lifted carpet, clearly illustrating the complete severance of the root system.
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