Increase the ratio of spawn to substrate, and ensure that it's mixed very evenly, as that will increase the surface area for growth. So it will colonize faster.

Increase the ratio of spawn to substrate, and ensure that it's mixed very evenly, as that will increase the surface area for growth. So it will colonize faster. If you're growing it in a jar, ensure that you make a couple of tiny airholes in the lid. The fungus needs oxygen to grow. But if the holes are too big then fungus gnats can get in, and you will find maggots in the mycelium, which you don't wont. Also if you have a moldy jar, leave it for a couple of months. You might find the mushroom fungus has overrun the mold eventually. And finally, Oyster mushrooms can't grow on pine woodchips, by the way.