The answer to 'why is my flower bed dying plants' is that there are several common causes, including overwatering, underwatering, poor soil quality, disease, or pest infestations. The symptoms may include wilting, yellowing leaves, stunted growth, or rotting roots. To troubleshoot and fix the issue, you'll need to closely inspect the plants, soil, and growing conditions.
If the issue is due to improper watering, adjusting your watering schedule can often resolve the problem. However, if the soil is poor quality or there is a disease or pest problem, you may need to amend the soil, apply treatments, or replace the plants entirely. In some cases, it's best to consult a professional landscaper who can diagnose the specific issue and recommend the appropriate solution.