dark brown sap on silver dollar eucalyptus

Question

My silver dollar eucalyptus has a brown crystal looking sap on under its bark. What can it be?

Answer 1

Sap is not typically a big problem with these trees unless there is a pest problem or disease present. I would inspect your tree for Eucalyptus Longhorned Borers, which are attracted to trees in drought. For more information, please visit the following link: http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7425.html

For more information on the care of silver dollar trees, please visit the following link:
https://www.gardeningknowhow.com/ornamental/trees/eucalyptus/tips-growing-eucalyptus.htm

For more reasons why trunks ooze sap, please visit the following link:
https://www.gardeningknowhow.com/ornamental/trees/tgen/what-is-tree-sap.htm