The answer to 'patio dead trees' is that there can be several common causes, including drought, disease, pest infestations, or root damage. Symptoms may include wilting leaves, bare branches, or the entire tree dying. The best solution often depends on the specific cause, but may involve watering, pruning, treating for pests or disease, or completely removing and replacing the dead tree.
If the issue is relatively minor, such as a single small tree, homeowners may be able to address it themselves. However, for larger trees or more complex problems, it's generally best to call in a professional landscaper or arborist to properly diagnose and treat the issue.