windy grass effect

There's something on kirupa about it:

http://www.kirupa.com/developer/mx/grass.htm

depends on how large you're going to run the image. I would hand animate a few different versions of a blad of grass blowing in the wind, then randomly place the blades (colormatching will be important).

You'll probably want to synchronize the motion too, but you should be able to control that fairly easily.

HmcH