The answer to 'why is my hedge bare spots' is that there are several common causes, including lack of sunlight, pests, disease, or improper pruning. Bare spots in a hedge can be caused by too much or too little sunlight, insect infestations, fungal diseases, or damage from improper trimming. These issues can lead to sparse, patchy growth and bare areas in the hedge.
To address bare spots, start by identifying the underlying cause. Check for signs of pests or disease, ensure the hedge is getting the right amount of sunlight, and evaluate your pruning techniques. Proper cultural care, pest management, and selective pruning can often restore a healthy, full hedge. If the problem persists, it's best to consult a professional landscaper who can properly diagnose and treat the issue.