I never thought of grass as a resource but it essentially is. And a very abundant one too!
When I mow the lawn I dump the clippings in my garden mostly because I feel bad sending this biodegradable material to a landfill by putting it in my garbage. It makes for an effective mulch when you have enough, and it grows so fast you can cover your whole garden with a thick layer in a matter of weeks. A thick layer will prevent weeds from growing and will also keep the bed from drying out.