Scorch and Related Problems in Trees and Shrubs
Author(s) M. F. Heimann, G. L. Worf.
Scorch, or the browning of leaf edges, affects a wide range of deciduous and evergreen plants throughout Wisconsin, especially ash, linden, maple, oak, pine, and spruce.
While scorch is easily recognizable, it is important to recognize that it is a symptom, not a cause. A number of problems cause symptoms that are generally classified as scorch. Affected plants should be examined further to determine the cause of scorch and whether that factor is causing serious damage to the plant. This fact sheet will help you identify the causes of scorch in your plants (4 pages; Revised in 1997).