I think the grass looks good Henry. Very natural.
I'd like to suggest that you render your images a tad smaller, but with higher quality settings.
The grasses look better with higher AA settings. What are you using now?
Maybe you've seen my comment in Dune's tread, but I found that (for me) the sweet spot for quality is AA6 with maximum samples.
AA8 gives better results, but takes quite some longer.
With optimizations like this you might even be able to render this image with soft-shadows, because that would look awesome on the bark where the shadows of the blossom would be blurred out a bit.
If you'd like I can render something for you. I don't have time to design stuff this week, but I can still render images of course.
Just let me know.
Cheers,
Martin