The answer to 'why is my lawn brown patches' is that there are several common causes, including drought, disease, pests, and poor soil conditions. Brown patches can indicate that your lawn is not getting enough water, has been affected by a fungal disease, or has been damaged by insects or other pests.
To address brown patches, you'll first need to identify the underlying cause. This may involve inspecting the soil, looking for signs of disease or pests, and monitoring the lawn's water needs. In some cases, the solution may be as simple as adjusting your watering schedule or applying a targeted treatment. However, if the problem is more severe or persistent, it may be best to consult a professional landscaper who can provide personalized advice and solutions.