The answer to 'why is my tree dying plants' is that there are several common causes for a tree dying, including disease, pests, environmental stress, or improper care. The most common symptoms are wilting, discolored or dropping leaves, peeling bark, and dieback of branches.
Some key causes to look for are fungal diseases like root rot or canker, insect infestations like borers or aphids, damage from drought, frost, or mechanical injury, or issues with the soil pH, drainage, or nutrient levels. Identifying the specific problem is important to determine the right treatment.