Friend of SFist Matt Baume wrote an intriguing piece this week on Bayview Greenwaste, a little company in the Bayview that produces tons of mulch and gives it away for free, and they're the ones responsible (in part) for the huge explosion of urban agriculture projects all around the city in recent years -- most notably, Hayes Valley Farm.

"Hayes Valley Farm spread tons of the company's high-quality mulch across the lot over the past year -- and they haven't had to pay for a single pound," Baume reports. Located on the city's southern waterfront, Bayview Greenwaste "collects plant waste -- for a fee -- and then grinds the organic matter into mulch that it gives away for free to anyone who wants it." Lucky recipients include nonprofits, municipalities, private citizens, schools, and power plants.

Learn more at Grist.