No blends in the render (4h pt-mlt), but I would if I had cared more about materials. For the leaves at least. The patch is using 3 similar phongs for twigs, leaves and grains. Each albedo was mapped with a two point ramp.
You are welcome !
edit: yet another one, same patch and mats but gradients and distribution.
The soil alone is 33 millions polys and I can't do any higher