The answer to 'lawn brown patches' is that they are a common problem faced by many homeowners, and they can be caused by a variety of factors. Brown patches in your lawn can be a sign of drought stress, disease, pest infestations, or improper mowing or watering practices.
Some of the most common causes of brown patches include fungal diseases like brown patch or dollar spot, grub infestations, and nutrient deficiencies in the soil. Symptoms may include circular or irregularly shaped brown or yellow areas in the lawn, as well as thinning or dying grass. The solution often involves addressing the underlying cause, whether that's improving irrigation, applying fungicides, or treating for pests.