I've a very old plum tree in my garden which always fruits well.
It has an old 'scar' about a foot above the ground where I believe a huge bough was removed from many years ago. This has cracked and often has seed grow in it from the friendly birds who like to store it there !
Now I notice there is a fungus - withered - in this crack. Also on the main trunk a huge 'slime' about 8" long has appreared.
Could this be the dreaded honey fungus ? As the fungus has withered and blackened I can't tell what colour it was!
Any advice would be much appreciated.