Yea he is right, i got my very first compost pile started, its like 3' deep X 5' long X 3' wide and i Turned it first time and you could feel the heat and see like smoke but i tell you imo that was fricken work.. I plan on making another identical one across from this one leaving like a 3' path between them and just transfer instead of "Turning" hoping that idea will work better.Weed seeds dont matter. Just pull em out when they germ and throw em ontop of your soil. Free mulch...lol besides with a constant shovel being rammed into the pile to aerate, living plants dont stand a chance in the compost pile.