Hrm...The results from this are a lot better than the results I got from randomly drawing shades of green onto the turf. I'm also not seeing any problems with them being tile-esque with this.
I get that tiling problem a lot, but that's not too uncommon with 32x32. You could of course extend this drawing method over many tiles, though, and over a 128x128 block the tiling might not be so obvious. Or you could go with 160x160 and repeat every blade at +64, +32 and multiples thereof modulo 160, to get a skewed tile effect which is often not as obvious.
Lummox JR
[EDIT]
I am grateful. Time to tweak. :P