As I noted a few posts back, my son found this tall grass plastic stuff at Michaels. It works wonders when bunched together.
We used a hot-glue gun to adhere them to the surface... positioning each one carefully as we went. Here's an overview of the grass applied to the diorama. We like how it turned out.
Here's a close up shot, which makes the grass look much more bountiful than it is. This is gonna look crazy sick in photos ;-) You can actually stand figures right in the grass, which looks insanely scwheet!
There you have it! Onto the other foilage! Woot!
Cheers! ~ Paul.