If you’ve noticed brown, dying patches in a sunny area of your lawn, or patches of lawn that appear to have been torn up, it’s possible you have a grub infestation. Grubs are insect larvae that feed on the roots of sunny, well-watered lawns during the spring and fall months. They do considerable damage to the root system of grass, causing large, brown areas of dead grass. Untreated lawns can be killed outright from a severe grub infestation.
Grubs are the C-shaped larvae of various beetles. Fully-grown larvae are one-half to three-quarters of an inch long. Early indications of grub infestation are irregular patches of dry grass, flocking birds, or entire areas of turf being torn up by raccoons, possums and skunks looking for a tasty treat. Damage can be witnessed by tugging on the grass surface. If grubs have been eating the root system, patches of turf will pull up easily like a rug, and the soil will show grubs.