MY FIRST STROPHARIA EXPERIMENT:
We took one bag of sawdust spawn (from Field and Forest, Peshtigo, WI) and put it straight away into a pile of mixed woodchips (fairly fresh) simply by placing spawn in thick sections of
newspaper (Wall Street Journal was the best - not kidding). Placement was late summer in timing.
We got abundant stropharia (WINE CAP) in the very next season. And we could also dig into the mulch, retrieve sections of the newpaper and move those pre-inoculated sections to new mulch piles. They all took with vigor.
Stropharia seems to me to be an especially robust species. Easy to spread as long as I had
wood chips and newspaper. And HUGE mushrooms ! Many as big as dinner plates. Some two pound mushrooms.
The mulch of woodchips were almost always associated with the mulch system around
trees. I think the shade of the tree was an environmental benefit for the mushroom vitality.
The newspaper was a great way to multiply and spread the spawn. I never bought but one small bag of spawn. After that the operation was easy to grow without additional inoculation expense. Add new newspaper to a producing mulch pile and it automatically became new inoculation material.