Pearl’s Premium drought-resistant Ultra Low Maintenance Lawn Seed is engineered to save watering, mowing and fertilizer while preventing runoff to help preserve drinking water supplies and protecting consumers from the health risks from lawn pesticides and chemical fertilizers. The seed grows at one quarter the rate of blue grass, requiring mowing only once a month rather than every week on average.  With 12-inch roots, the grass seed needs no chemical fertilizer, rarely needs water once established, and looks like a lush green lawn — even during winter, according to the company.

http://greenbuildingnews.com/articles/2011/06/2/low-maintenance-lawn-seed