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Guest or Pest: Bluegrass Billbug

Jun 19, 2024

Bluegrass Billbug

What Is a Bluegrass Billbug?

The bluegrass billbug is a small, black weevil that resides in northern regions of the United States and southern regions of Canada. It is about 1/4 inch long with a long snout or beak, which it uses to feed on the roots, stems, and leaves of grass plants. 


The life cycle of a bluegrass billbug goes through several stages, including egg, larva, pupa, and adult. The larvae emerge in August, and the adults survive the winter by living in protected areas, such as gardens. The adult Billbugs emerge early in the spring, and by late June the females begin depositing their eggs in the lawn, which will begin to hatch within a couple of weeks. 

Guest or Pest?

Unfortunately, the feeding habits of bluegrass billbugs can cause significant damage to turfgrass and other grassy plants. You may recognize billbug damage by weak roots and irregularly shaped discoloration in your lawn. Lawns that are already thin, dry, or infested with weeds are especially susceptible to insect activity and damage.


The best time to control bluegrass billbugs is when they are very young (in June and July), before you are faced with severe damage. Once the lawn is infested, professional treatment may be necessary to eliminate the problem. When it comes to insect damage, a correct diagnosis is essential. Our friends over at Weed Man can help!

Eliminate Pests with Mosquito Hero & Our Friends at Weed Man!

If you suspect bluegrass billbug activity or damage in your lawn, our friends over at Weed Man can help! Ask your local Weed Man professional about the best form of treatment that is available to improve the conditions of your lawn.


And when it comes to dangerous, harmful pests like ticks and mosquitoes, you can reclaim your outdoor space with Mosquito Hero. Our mosquito control services give you custom, targeted control and monthly service from a trained professional, effectively reducing the mosquito population in your yard. And our tick control service aims to eliminate these pests from your property and prevent further tick activity.


Find a Mosquito Hero near you and get a free quote today!

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