The answer to 'why is my hedge disease' is that there are several common causes of hedge diseases, including fungal infections, pest infestations, and environmental stressors. Symptoms may include discolored, wilted, or dying foliage, stunted growth, and overall decline of the hedge.
Some of the most common hedge diseases include powdery mildew, leaf scorch, and fungal leaf spots. These can be caused by factors like overwatering, poor air circulation, or nutrient deficiencies. Pests like aphids, spider mites, and scale insects can also weaken and damage hedges. Environmental issues like drought, frost damage, or salt buildup can further stress the plants and make them more susceptible to disease.