What Are Signs of Grubs in Your Yard?

Grubs, also called grubworms or white grubs, are the larvae of May or June beetles. They feed on the roots of lawns, flowers and vegetables and can cause severe lawn damage if there is a heavy infestation. They live underground and for this reason they are often overlooked as a cause of lawn damage. Look for these signs if you think you may have grubs in your yard.

Dead Grass

A dying lawn is one of the most common signs of grubs. The grass will gradually thin and turn yellow. Eventually it dies, leaving brown patches throughout the yard. The patches that signify a grub problem are usually irregularly shaped and not the circular shape associated with fungal diseases like brown patch.

Detached Roots

Grubs damage grass by eating its roots. This causes the grass to die and the roots to become detached from the grass. The brown patches in lawns that are infested with grubs can often be lifted in one piece like carpet because they no longer have roots to hold them down.

Grubworms

If you suspect grubs may be causing problems in your yard, dig up a few square-foot areas in your yard and look for them. If you find white, C-shaped wormlike creatures with tan or brown heads and three sets of legs, you have white grubs. Treat your lawn with an insecticide for grubworm control if you find five or more in a square-foot area.

Other Animals

White grubs can attract other animals such as wasps, armadillos, moles, raccoons and birds to your lawn, too. However, these animals are not a sure sign of a grubworm infestation. They may be interested in other organisms like earthworms. If you do find an increase in other kinds of pests adding to the damage in your yard, you may want to inspect the areas for grubs to be sure.

Keywords: grubworm signs, dead grass causes, white grub symptoms

About this Author

Tracey Bleakley has been writing for the last year. She has had numerous education articles published on both eHow.com and Brighthub.com. She has 10 years experience as an elementary school teacher. Bleakley received her Bachelor of Science in education with a specialization in reading from the University of Texas at Austin.