The answer to 'why is my garden dead trees' is that there are several common causes for dead trees in a garden, including disease, pests, drought, and improper planting or care. Symptoms may include wilting, discolored leaves, and branches that fail to produce new growth. To address the issue, it's important to first identify the underlying cause and then take the appropriate remedial actions, which may involve pruning, treating for pests or disease, or replacing the tree altogether.
If the problem is due to disease or pests, it's generally best to consult with a professional arborist or horticulturist who can diagnose the issue and recommend the most effective treatment. For problems related to improper planting or care, such as watering or fertilization, homeowners may be able to address the issue themselves with some research and guidance from local gardening resources.