Which insect is known to cause damage to the roots of turfgrass?

The grubs from the Japanese beetle are well-known for causing significant damage to the roots of turfgrass. These larvae feed on the roots, which can lead to weakened grass and, in severe cases, death of the turf. When grubs invade a lawn, they disrupt the plant's ability to absorb water and nutrients, resulting in poor growth, discoloration, and increased susceptibility to drought and disease.

In contrast, grasshoppers primarily feed on the above-ground parts of plants, including leaves and stems, while ants are generally more of a nuisance and do not typically damage turfgrass roots. Spiders, on the other hand, are predators that help control other pest populations and do not contribute to root damage either. Therefore, the significant impact that grubs have on the roots is what highlights their importance as a pest in turf management.