Below is a link to a map I made to create displacement grass for your scenes. Free for personal and commercial use. If you need a nicely manicured lawn, using displacement is the way to go. If you need lush, rich more natural uncut grass I'd stick to using instancing. In any case, this is great for kept areas, so I hope it helps some of you out! Below is the link to the displacement map, and below the link are a few renders of it in action. Enjoy!
http://postimg.org/image/l0xjioch7/
