Weeping Cherry Trees

Oozing Sap

Anonymous added on August 6, 2011 | Answered

We have a weeping cherry that has been oozing amber colored sap from the lower part of the trunk, not physically damaged (bark). What could be causing it and how do we fix it? It has been doing it for a few years and the tree still produces beautiful flowers and nice green leaves, but the amount of sap is getting worse every year. We originally suspected borers and tried Lindane, but it never really did the job. Any suggestions?

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Certified GKH Gardening Expert
Answered on August 7, 2011

Fruit trees are very susceptible to frost cracks or bark splitting due to the fact that they have thin bark. These are cause by drastic temperature fluctuations, especially in the winter or by warm sun on the tree in the winter time. This then causes sap oozing. It can be reduced by providing some extra protection to the tree, especially the lower part of the tree. Normally, a paper wrap is used to give the trunk some extra winter protection.

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