Williams delivered 2 units of bark dust this summer which I have used in new flower beds I put in this year. I had about 1 unit left on a tarp in my driveway. Following this recent rain, I found hundreds and hundreds of seeds sprouting in the new flower beds. There were no seeds in my established flower beds, however, the remaining pile of barkdust contained massive groupings of seeds that had sprouted and knit themselves into almost a fabric. These were not all on the top of the remaining pile, but buried within the pile. The seeds are about the size of a wheat berry. I called Williams as one would assume they would not want this to happen to another customer. First, they said the seeds must have been on the ground before the barkdust was put down. When I explained that I used their landscape fabric on the ground first, then they said that the seeds must have flown on to the barkdust. Clearly seeds would not only just fall on bark delivered this year, nor would seeds buried themselves 1 to 3 feet inside of a pile. But these logical conclusions were not important to Williams Fuel! I feel sorry if you do business with this company. You, like I, will spend many hours picking these seeds out.