Posted: 12/09/2014 at 10:45
I have similar problem. In process of removing 10 yards of 8ft Privet hedge and nearby decking. Have discovered that the virginia creeper roots underneath the decking are slimy and rotten with clusters of small toadstools growing on them which are yellowy in colour. It may be something else but I fear the worst. Will have to cut back to healthy root as creeper itself does not appear to be affected Yet.
Intending to replace dying privet with chain link fence and grow Ivy up it as that seems to be fairly fungus resistant and I want shelter for the birds. The decking is being replaced by a flagged patio. Am going to burn affected hedge/roots on patio area so that might help to kill off and threads/spores etc.
KA Unable to post picture but interested to see if your toad stools look like mine/