The answer to 'hedge brown patches' is that they are a common problem caused by a variety of factors, including drought, disease, pests, or improper care. The symptoms include discolored, wilting, or dying sections of the hedge. Solutions can include watering, pruning, applying fungicide or insecticide, or replacing affected plants.
In many cases, homeowners can address minor brown patches through DIY methods. However, if the issue is widespread or the cause is unclear, it's best to consult a professional landscaper or horticulturist who can diagnose the problem and recommend the appropriate treatment.