DAM! hehe... Mike beats me to the PFX grass post
Yup, try that, worked well for me in a recent client shot.
And the docs explain pretty clearly about adding dynamics to strokes too, which is an amazing thing because usually, you have to do a little bit more digging to get any relevant info out of them sometimes
Israel "Izzy" Long
Motion and Title Design for Broadcast-Film-DS
izzylong.com