​Brown Spots on your Lawn

How to Recognize the Difference Between Lawn Damage Caused by Chinch Bugs or Lawn fungus

When it comes to lawns it is better to be knowledgeable about what kind of problem is causing the brown spot damage in your lawn. Many pest control companies may want to take advantage of this and claim poor insect control by your pest control company and recommend you switch to their own Lawn Pest Control program, when in fact this could cause more damage on your lawn if instead you have lawn fungus.

Lawn fungus damage may be confused with chinch bug damage on your lawn because they both cause brown spots. Be aware that most lawn pest control programs do not cover Lawn fungus. Here are a few tips and how to distinguish between the two:


1-The main difference, at least to the naked eye, is the uniformity of the circumference of a brown spot caused by lawn fungus, you will find the brown spot expanding in a uniform circle. Chinch bug brown spots are not as uniform due to the spread of the bugs in different directions.

2- Lawn Fungus damage shows lawn patches (Brown patch fungus) or small spots the size of a compact disc (dollar spot fungus) completely burned in the inside area of the damage. Chinch bugs leave little pieces of live grass inside the damaged area.

3- Another difference between lawn fungus damage and chinch bug damage is that in the case of lawn fungus, you will usually find dead spots in the grass blades or leafs surrounding the dead patch area. This is due to "leaf spot" fungus. This one is usually found associated with the main dead patch damage caused by "brown patch" or "dollar spot" fungus. There are different shapes of fungus damage depending on the soil and type of fungus.

Samples of Lawn Damage:
Brown Patch Fungus Lawn Damage
Brown Patch Fungus Lawn Damage
Chinch Bug Lawn Damage
Chinch Bug Lawn Damage
Dollar Spot Fungus Lawn Damage
Dollar Spot Fungus Lawn Damage
Leaf Spot Fungus Damage
Leaf Spot Fungus Damage

Causes for Lawn Fungus Damage 

  • Weather related: Mostly during the hot rainy seasons of the year

  • Wrong timing of sprinklers: Sprinklers should not run during late afternoon or evening hours, this causes the water to sit overnight allowing fungus to develop. The water should be able to dry out before the evening.

  • People traffic, gasoline burns from leaking lawnmowers, objects left on the lawn , fertilizer, heat burns from cars parked or left running on the lawn, chlorine from pool cleaners, etc.

  • Water accumulation in surface depressions


Solutions for Lawn Fungus Damage

  • Chemical Control with a fungicide specifically targeted for Lawn Fungus

  • Once a year De-thatching of lawn to allow nutrients, water and air to penetrate the roots

  • Re-sodding of lawn

  • Having a healthy lawn with the right amount of watering and fertilization


An extreme case brown patch fungus may destroy the whole lawn in matter of days if is not chemically controlled. Call Orange Lawn and Pest Control services to get your lawn fungus under control, ask for our Lawn Fungus Control Combo:

1. Lawn Fungus Control Program-plus-

2. Lawn Insect Control and Fertilization Program-plus-

3. Once-year de-thatching Service


​Call Orange Lawn and Pest Control today at toll free 1-888-972-BUGS (1-888-972-2847)


How to ID Lawn Damage Video: