Not many people have managed to get away with indoor sub cultivation, the best I can remember ended up doing it inside a shed during the winter period anyway, which I feel is where the main problems stem from.
The easiest method for cultivating an outdoor patch from a wild specimen that i've seen has to be the hessian tek.
Grab some wild mycelial growth, not too much as you really don't want to damage this stuff in the wild and spread it along a rolled out hessian sack. Then roll the sack up and bag it up. After a month or two in the optimal conditions the mycelium should spread along the sack, in which case you roll it out and cover it with the optimal substrate of hardwood/hardwood sawdust... maybe some vermiculite too. Then cover that again with a plastic tarp for some months... once the fruiting conditions have come round then you uncover and hope for the best
For more detailed info try looking it up.
Otherwise you're looking at growing out the myclium in quart jars or grow bags and spawning outdoors to the woodchips anyway.
This is all very generic advice suitable for growing most non-symbiotic outdoor mushrooms.
