yep. plus it keeps them out of the landfill. right now my rhubarb patch has been exploding in size and im finding little rhubarbs popping up in random places a good 10' away from the existing plants. I may throw a big root in a stack and see if it sets shop in there, would be a great way to contain it if so... and would open up the area for horseradish that I was wanting to plant but didn't have the room