hey all, thanks for the feedback. you're absolutely right about that sudden shift. i only covered the immediate front area with the actual grass object then attempted to just create a simple surface layer for grass and try to use that for further distances just to keep my population count down. but maybe i should have tried to make it darker like the foreground grass.
the only thing that really bothers me about this image is it doesn't seem to have that "photo-realistic" look to it. it looks nice and all but it's not one of those pictures you look at and say wow, what a photograph. I tried to do another render last night with much higher settings on everything and let it run over night, but to my disappointment, when i went to check it, the result looked almost identical to this. so i'm not sure what i'm doing wrong.

but as the others have said, maybe some more variation in flowers and color. now i think of it as njeneb said, it does seem a bit over saturated.