What you’ll see: Irregular patches of yellowed or dead grass. They’re most destructive mid to late summer, but the damage they cause may not show up until early fall and by then, it’s too late. What it does: The grub lives below ground and feeds on the roots of tender grass plants, killing the grass. The European chafer grub, seen in the accompanying photo, isn’t as widespread as the Japanese beetle, but it’s even more damaging to home lawns. Department of Agriculture, Japanese beetle grubs alone cause an estimated $234 million in damage each year, including the cost to control them and to replace damaged turf. Grubs may be the most damaging lawn pests in the United States. Grub actually refers to the larval stage of many different beetles, including the Japanese beetle and the June bug.
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