Hey!

I'm afraid it's the only vegetation shader out there (as far as I know)... Maybe tweaking it might help?
Other than that, I remember in AUM (can't remember the number) there was an example of how to animate bushes and grass via bones.
It's not the fastest solution (since bones + their rotation for lots of grass can be slow), but it might be useful too.

Greets!

Edit: I was able to find the grass from AUM, take a look here:
AUM 76 -> Hot at the forum -> Plant effect by Mocosgames