Stinky sap on apple tree
A friend says her apple tree has sap coming down its trunk that smell like garbage. Any ideas? A disease of some kind? What to do or watch for?
Stearns County Minnesota
This most likely bacterial ooze. Also known as wet wood. It is harmless: it doesn't damage the tree. See the pictures and explanation is the website below: http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/non-harmful-tree-conditions/