The answer to 'garden brown patches' is that there are several common causes, including drought stress, disease, insect damage, or improper lawn care. Brown patches can appear as irregular shapes or circular patterns, and they may vary in size from a few inches to several feet across.
To diagnose and address the issue, it's important to first identify the underlying cause. This may involve inspecting the affected area, checking soil moisture levels, and looking for signs of pests or disease. In many cases, simple adjustments to watering, mowing, or fertilization can help resolve the problem. However, more severe issues like fungal diseases or grub infestations may require the expertise of a professional landscaper or lawn care specialist.