The answer to 'hedge turning brown' is that there are several common causes, including drought, disease, pests, or improper care. Symptoms include leaves or needles turning brown or yellow, wilting, or premature leaf drop. Solutions may involve adjusting watering, treating pests or disease, or pruning and replacing damaged sections.
In many cases, minor issues can be addressed through DIY maintenance like watering, mulching, or light pruning. However, for more serious problems like disease or severe damage, it's best to consult a professional landscaper or arborist to properly diagnose and treat the issue.