Ive seen what worms do to soil in pots , their poop once produced holds alot of water when wattering ,the soil moisture becomes hard to control. Against the popular believe i dont think ive had plant roots getting eaten by them , they do like to pull on leaves that are toching the ground though.
I wanted to add them since they will help to brake down the mulch on top, theres no way of removing them now, i only can add more...
I dont have potted plants in the gh, just a few pots which wont be there for long, so everithing is planted right into the soil.