The answer to 'shrub dying plants' is that there are several common causes, including overwatering, underwatering, disease, pests, and improper planting or care. Symptoms may include wilting, yellowing or browning leaves, stunted growth, and dieback of branches. Solutions depend on the specific cause but can include adjusting watering, treating for pests or disease, and improving growing conditions.
For minor issues, homeowners may be able to diagnose and resolve the problem themselves. However, for more serious or persistent problems, it's best to consult a professional landscaper or horticulturist who can properly identify the issue and recommend the appropriate treatment.