The answer to 'why is my tree pests' is that trees can be susceptible to a variety of pests, including insects, fungi, and diseases, which can cause damage and decline. Common tree pests include aphids, scale insects, borers, and leaf-feeding caterpillars, as well as fungal diseases like leaf scorch, root rot, and cankers.
Symptoms of tree pests may include discolored or wilting leaves, dieback of branches, excessive sap flow, and overall tree decline. Identifying the specific pest or disease affecting your tree is crucial for determining the appropriate treatment. While some minor pest issues can be managed with DIY methods like pruning, applying horticultural oils, or using organic pesticides, more severe or persistent problems may require the expertise of a certified arborist or tree care professional.