Peter Guthrie has added part 2 to his VRay grass tutorial that I mentioned in a previous post You can find the updated tutorial here: link The results are amazing! He uses the VRayScatter plugin, but you can also use this free scatter plugin by Peter Watje: ( link ) I've used this free scatter plugin before and it works pretty well. The nice thing about it is that you can scatter VRayProxy objects as instances.
3D and V-Ray tutorials, news, experiments. And some Swift too.