Hakonechloa grass is one of my favourites. It seems to flow over whatever surrounds it. Although it isn't a native Ontario grass, I grow it because I love it so.
This clump is about 6 years old and really does need dividing and replanting. I noticed last spring that the centre is becoming bare. So now I'm looking for another place that would be improved with the flow of a yellow-green grass all summer and the jolt of autumn colour next fall.