This is not a bag of weed, no this is moss out of my yard and you wouldn't believe how I get it. We have a large maple tree that the birds come through once in a while and rip the moss up looking for bugs. So I just pick it up. I can't garantee that there are no pets in the moss, its right out of mother nature, so treat it accordingly.
The bag is a gallon size freezer bag with random pieces of moss harvested by our local woodpeckers.