I have an older cherry tree that has multiple bubbles of sap appearing on the trunk and larger limbs. What is causing this and is there a cure?

Gardens & Landscapes May 15, 2008 Print Friendly and PDF
Stone fruit trees, including cherries, often ooze amber-colored sap from the trunk when they become stressed. Drought is a common cause. Cytospora canker, a fungal disease affecting trunks of many types of trees, can also be the cause when it finds a home in stressed trees. The best bet is to try to increase the vigor of the plant; water sufficiently but not excessively. Water the tree well out from the trunk. Also provide water during dry spells. Fertilize the tree lightly in May with a granular fertilizer sprinkled under the tree canopy, from the trunk out to beyond the branch extremities. If the tree is in fertilized lawn area, there is no need to apply any extra fertilizer just to the tree. For more informaton refer to: Cytospora Canker.

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This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.