New to mushrooms - shitake plugs
I recently bought some shitake mushroom plugs which I'll be installing into a large log I found in the local woods.
My question is do I need to prepare this log 1st, obviously as it has come from the local woods I'm a bit worried it could contain disease or other fungus that would cause either me or the other mushrooms a problem.
My other idea was to cut some logs out of 2 old. But not rotten fir trees left over from Christmas.