The answer to 'mulch brown patches' is that brown patches in your mulch can be caused by a variety of factors, including fungal growth, decomposition, or improper application. These patches can be unsightly and may indicate an underlying issue with your landscaping.
Some common causes of brown mulch patches include excessive moisture, poor air circulation, or a buildup of organic matter. In many cases, these patches can be addressed through simple maintenance tasks like raking and aerating the mulch. However, if the problem persists or is accompanied by other signs of distress, it may be best to consult a professional landscaper for a more thorough evaluation.