MPORTANT: Update 3.1 - with added 3 scatter objects - for your trees, bushes, rocks... or whatever you wish to randomly scatter ;)
Here is, finally after 4 years, new Grass Kit for Cinema 4D and Vray 3.4. This new version is drastically improved and it is done from scratch to be faster and to have better controls over grass creation.
This version is not free, but if you wish you can still download GK 2 (previous version) from my CG Trader profile under "free models" section...
you can buy it here: GUMROAD STORE
Thanks and best of luck...