The answer to 'hedge dying' is that there are several common causes for a dying hedge, including pests, disease, improper watering, and lack of nutrients. Symptoms may include discolored or wilting leaves, dead or bare patches, and overall poor growth.
To troubleshoot a dying hedge, first check for signs of pests like aphids or mites that may be damaging the plant. Diseases like fungal infections can also cause the hedge to decline. Improper watering, either too much or too little, can stress the plants. Finally, a lack of essential nutrients in the soil can lead to nutrient deficiencies and poor health. If you can't identify and resolve the issue, it's best to call in a professional landscaper to properly diagnose and treat the problem.