Every year when I rake up leaves I save them to dig into my rather large garden, my area is quite dry so I dont even attempt to corral and compost them the forest homestead way but just digging them straight into the ground is inefficient and awkward. I had the idea to wet them, pack them into bags with oyster spawn, and let that have a run to break them down some. Not to get fruits, just to compost the leaves. I've looked up the cultural guidelines for oyster spawn for growers and mushroom farms do their spawn run far warmer than my winters. But thats ideal conditions for profit.
My question is, if king oyster spawn were introduced to large sacks of leaves in an area that routinely freezes but on average is above freezing all winter might the mycelium show substantial expansion in 4 months?