The health and survival of many Philadelphia trees is threatened by infectious disease problems. Sycamore, Dogwood, Oak Crabapple and other popular landscape trees are most at risk.
Learn more about the problems facing trees in Giroud's guide to Insect and Disease Control. Check out Giroud's Library of the Top Diseases causing the most damage for trees in the Philadelphia region. For more information about sick tree problems, you can also visit our Insect and Disease Control Guide.