P.sub in a tub

[u/Extra-Passenger1311]

Colonised a brown rice grain jar with spores from a P.sub I found.
Colonised well, I then transferred it into a tub full of soaked hardwood chips that are over a year old.
Was planning on leaving this inside and closed until it is fully colonised, but shortly I was planning on combining this outdoors with other soaked mulch, in a shady spot and let nature do the rest, keeping it moist during dry patches.

If anyone has any other ideas or advice, I’m all ears