[dmforcier]

So there's no moss in the pots?

IMO you should spend your effort on analyzing and improving the growing medium you're using. Many people grow successfully in bags. (I prefer pots but I'm growing in heat.)

What exactly is in your mix? If you're using a commercial product, some description of the contents should be on the bag.

I'm skeptical that if you have a soil problem, resting it for a couple of years will fix anything. Based on what you find is in it. you might be better off using it to fill low spots in your lawn.

Worms are a good thing, but if the soil doesn't have a fair amount of organic material already, you would need to add compost or compostable material. They need something to eat.