In Idaho one of the most common lawn pests is the Bluegrass Billbug; these pests can cause some serious damage to your lawn if not taken care of properly. Alpha Home Pest Control can help make a proper diagnosis.
Damages from billbugs can resemble drought/lack of watering, with irregular patches of dry grass. Some people may think the dry looking lawn isn’t getting enough water and will continue to water more, however, the damaged lawn will not respond to the extra watering.
Adult Bluegrass Billbugs are gray, brown, or black with a curved snout and a hard body that is about 3/16″ (5 mm) in size. They overwinter in the soil mostly as adults. In the spring when the temperatures are starting to rise, the adult billbugs can often be seen walking on patios and sidewalks around May –mid June. Lawn damage from an adult billbug usually consists of holes in blades of grass caused by chewing. Damages that are far less serve than what their young larvae can do.
The Billbug larvae are white with a brown head, legless, C-shaped and about the size of a large grain of rice. The larvae are where the real damage is done. They feed on the grass roots and can easily spread causing large patches of dry looking lawn.
If you are noticing your lawn starting to get odd dry patches, it’s a good idea to do some investigating. (Remember, you can always call a pest professional to do this for you). Try the “Tug Test” to see if you have a billbug infestation:
- Find a spot where the dry grass meets green grass, hold the dry grass with your hand and gently tug on the dry grass
- If the grass easily lifts up with no attached roots, and has a saw dust like material at the base of the blades and stems, billbugs are likely the cause.
- You may also see the white larvae with their brown heads in the soil on the ground or on the piece of lawn you pulled up.
Now is the time these pesky bill bugs will start showing off the damage they have done, but don’t worry you still have time to correct the problem with a proper treatment plan. The longer you wait, the more time they have to create lawn damage. If you are noticing dry patches in the lawn that aren’t corrected with extra watering, follow the “tug test” and give us a call!
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