Our family pays $6 a month for a green-waste garbage can. Wanting to be ecologically minded, we went to the Bountiful dump to purchase mulch made from the waste from the cans. The dump was not selling mulch: "The content of arsenic was too high."
My neighbor went to a local garden club, where she learned about the fertilizing and recycling virtues of turkey litter (the poultry manure mixed with the bedding wood shavings, rice hulls, etc. that is scooped up at turkey farms.
She applied turkey litter to her beautiful garden. After the recent storms, her garden was blanketed with a thick red layer of prostrate pigweed.