From Can you be green and have a green lawn? in the Washington Post, June 20, 2011.
“So is it possible to be environmentally sensitive and have a good lawn? Yes, according to Frank Rossi, an associate professor of horticulture at Cornell University, who offers a crib sheet: ‘When people at a cocktail party ask me how to have a great lawn, I tell them to prepare the soil, choose the right grass, mow it high and fertilize it no more than twice a year.'”