The answer to 'tree trimming dying' is that there are several common causes for a tree to start dying, including disease, pests, drought, or physical damage. Symptoms may include wilting leaves, discoloration, dieback of branches, or the tree failing to produce new growth. The best solution depends on the underlying cause, but often involves professional tree trimming or removal.
If the tree is only moderately affected, DIY trimming may be an option, but it's important to properly identify and address the root cause. For more severe issues or large trees, it's best to call in a certified arborist who can properly diagnose the problem and provide the necessary treatment or tree removal services.