I am about to lay a hugelkultur bed and was considering using some alder (or is it birch?) which recently fell on my property. Before it fell, it had many woody and stiff oyster shaped mushrooms all over it. Should I be worried that this growth will negatively effect my beds? Is there a reason to pass on that wood, and use something else instead? I want to use it because it is already really spongy and rotten.
Mushrooms and other fungal growth is a sign of a healthy woodland soil culture, and a noted benefit of hugelkultur beds - speeding the succession from an immature soil ecosystem (heavily reliant on bacterial composition) to a mature woodland soil ecosystem (with a heavy fungal composition).
Location: Western Washington (Zone 7B - temperate maritime)