The answer to 'hedge bare spots' is that there are several common causes, including improper planting, lack of water, disease, or pest infestations. Symptoms include thinning foliage, dead branches, or entire sections of the hedge dying off. Solutions can include pruning, fertilizing, treating for pests or disease, or in severe cases, replanting the hedge.
If the bare spots are limited, you may be able to address them through DIY methods like mulching, watering, or targeted pruning. However, if the issue is widespread or you suspect a disease or pest problem, it's best to consult a professional landscaper. They can diagnose the underlying cause and recommend the appropriate treatment to restore your hedge.