Prune limbs properly. See 7.207, Pruning Deciduous Trees . Remove dying limbs with proper pruning techniques. Dead limbs attract insect and disease-causing organisms. Healthy, vigorous trees are less likely to succumb to decline and gummosis.
Prevention is the best defense.
Go to top of this page. Updated Wednesday, May 02, 2001. Contact Cooperative Extension Web Manager . Cooperative Extension programs are available to all without discrimination. No endorsement of products mentioned is intended nor is criticism implied of products not mentioned.