is tree sap a sign of tree sick
Watch out for cracks, cankers, and holes. Cankers are lesions on the branches and trunk of the tree, often circular or oval, with a sunken center and raised edges. Deep splits through the bark are also signs of possible tree failure. Be on the lookout for sap seepage, whether from a wound or other area of the tree. Sap seepage can be an indication of a bacterial infection within the tree, or damage being done to the tree by insects or birds.