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How to Control Grubs in the Landscape

The larval stage of scarab beetles are referred to as grubs; they are normally C-shaped, and white or whitish in color with brown heads.  Turf grass roots are especially tasty to grubs, but they may also feed on landscape plant roots.  Symptoms of grub damage include yellowing or browning of grass leaves and thinning lawn areas.  Lawns may look drought stressed, even if they are getting adequate rainfall or irrigation. Often times, fall damage from grubs doesn’t show up until areas fail to green up the following spring.  Affected grass might be easy to pull up, due to loss of root system.  Additional damage may occur when animals root up lawn areas in their search for grubs. If you have seen one grub, you have many.

Treatment is necessary for grub control; they do not go away on their own.  It is also necessary to treat for several years; if you had grubs last year, treat this year also.  Although many products indicate that they treat for a full year, multiple applications (at least 2 per year) should be applied for best results.  We carry a granular product called Bayer Complete Insect Killer and a liquid grub control called Hi-Yield Systemic Insect Spray.  These control methods also treat for other lawn pests ticks and fleas.  As with any chemical control, read labels carefully and follow application directions.