Which stage of the sod webworm is considered the damaging stage?

The larvae stage of the sod webworm is considered the damaging stage because it is during this phase that the pest actively feeds on the grass. While the adult sod webworms are more noticeable due to their presence above the turf, they do not cause damage to the grass. The eggs are also harmless, as they are in a dormant state until they hatch into larvae. Nymphs, on the other hand, refer to the immature stages of certain insects and are not a stage applicable to sod webworms, which develop directly from egg to larvae. The larvae create visible damage by chewing through the grass blades, which can lead to thinning turf and even extensive areas of dead grass. Managing the larvae is crucial to maintaining healthy turf, making this stage significant in pest control practices.