Commented: Sick earthworms!Yes, it could be the Ortho that's making the worms sick. I would try to remove the top layer of the soil where the contaminated mulch is. Not only will Ortho residue kill the worms, it will throw off ...
Commented: Using mulch in containers?Mulch as a top dressing is okay, but I would not add mulch into the potting mix or at the bottom of the pot because it's too heavy for the roots.