Artificial grass is also excellent for places where putting real grass can be difficult, like rooftops, pool surrounds, hillsides, and under large trees. A carpet of lush natural grass on a rooftop requires a lot of work and maintenance, but artificial grass gives it a green look all year long without the same burden of maintenance. And instead of indoor outdoor carpeting or nothing at all surrounding a pool, a soft layer of grass can add that special something to an afternoon swim. How about that hillside that is perennially bare or the area under that shady tree where you can't seem to get anything to grow? Artificial grass lawns are the perfect water saving, cost saving, environmentally friendly alternative.