White Oak Slime flux?

Asked October 18, 2017, 2:35 PM EDT

We have a very old oak that has the following symptoms: cracked and peeling bark, wet bark with oozing liquid that smells like rotton apples (attracting bees). There are also some round holes in the bark. My google research suggests flux, goldspotted borer......all sounds like a death sentence. Is it possible to save the tree, or should we have it taken down. I am a master gardener, living in Catonsville. The tree is on the edge of Patapsco State Park.

Baltimore County Maryland white oak decline tree

1 Response

We viewed your photos. It looks like the tree may have some dead wood, rot, the black staining may be hypoxylon (canker disease), some insect issues, we cannot say for sure. When trees are stressed due to poor site conditions, drought, poor drainage, root damage, etc. they can be susceptible to disease and insect issues such as borers. These are secondary issues. The borer you mentioned is in CA not here. Here is our publication on these types of problems http://extension.umd.edu/sites/default/files/_images/programs/hgic/Publications/HG86%20Common%20Abio...

We recommend that you contact several certified arborists for an onsite diagnosis regarding the health of the tree and the best way to proceed. http://www.treesaregood.org/

mh