During which season does the majority of white grub activity occur?

The majority of white grub activity occurs during the summer months. During this season, grubs, which are the larvae of various beetles, are actively feeding on the roots of grasses and other plants. At this stage, they are larger and most damaging, which is why it's important for turf managers to monitor and manage them during this time.

White grubs generally hatch in late spring, and as temperatures rise in summer, their feeding activity increases significantly. This feeding can lead to visible damage to lawns, such as browning or wilting, as the roots get severed. In contrast, during the fall, while grubs may still be present, their activity level declines as they prepare for the cooler months. In winter, white grubs are dormant and not active at all, making these seasons less critical for monitoring and management compared to summer.