The answer to 'why is my tree' is that there could be several common causes, including disease, pests, environmental stress, or improper care. Some common symptoms to look for include discolored or wilting leaves, dieback of branches, abnormal growth patterns, or signs of insect or fungal infestations. The solution will depend on the specific issue, but may involve pruning, treatment with pesticides or fungicides, adjusting soil conditions, or in severe cases, removing and replacing the tree.
If you're unsure of the cause or how to properly address the problem, it's generally best to call in a professional arborist or landscaper. They have the expertise to diagnose the issue and recommend the most effective treatment. While some minor tree care tasks can be done DIY, more complex problems are best left to the experts to ensure the health and safety of your tree.