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Why is Your Lawn Turning Brown for No Apparent Reason

August 18, 2014

Is your grass turning brown in no particular pattern almost like the lawn is dry, yet you have been getting rainfall?  This could be an insect problem.  One clue to look for with insects is the presence of lawn moths when you mow.  The moths do not damage your grass, however they lay eggs for sod webworm, cutworm and other lawn damaging insects.  Chinchbug damage also shows up this time of year, especially in sunny areas.  St. Augustinegrass and Kentucky Bluegrass lawns are especially susceptible to lawn insect damage.

The good news is you can protect your lawn with Turf Builder SummerGuard.  Just one application will take care of lawn-damaging insects as well as ticks and fleas.  And, it gives your lawn a special summer feeding.  If your lawn does not need feeding right now, you can kill lawn insects with Ortho Bug B Gon MAX.  Water your lawn after spreading these products.  After your lawn dries it is ok for your pets and kids to play in your grass.

Lawn moths fly from the lawn during the evening or when mowing.  They lay eggs for sodweborms or cutworms that can cause your lawn to thin and turn brown during summer.

Lawn moths fly from the lawn during the evening or when mowing. They lay eggs for sod weborms or cutworms that can cause your lawn to thin and turn brown during summer.

Chinchbugs are attacking the lawn on the left while the lawn on the right is protected.  If left untreated the lawn on the left will need to be replanted.

Chinchbugs are attacking the lawn on the left while the lawn on the right is protected. If left untreated the lawn on the left will need to be replanted.

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4 Comments
  1. leo permalink

    how many SUMMER GUARDS do you have ?

  2. Frank Patterson permalink

    I have had has had large areas turn completely brown in about a week to ten days. A week ago the lawn was as you describe with Chinchbugs, but we went on vacation last Friday, and when we retuned on Tuesday, large areas were completely dead with the exception of a few individual green shoots. Can Chinchbugs move that fast? Other areas are as green as ever. I have been treating all summer to prevent fungus.

    • Hi Frank Patterson
      Chinchbugs can move that fast. Let me know where you are located and I can provide some possible causes.

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