Yardsmart: 'Green manure' for lazy gardeners Long before the advent of synthetic plant foods, farmers had only two ways to make their fields more fertile. One method was to spread manure from livestock, which proved a labor-intensive method that dates back to the dawn of agriculture. The other option, known as "green manure," doesn't use real manure at all, but provides even better results.
Oct. 8, 2013 - The MetroWest Daily News