How long have you had the plant? Can you give us a picture of it as it is now?

According to my books, you're right on the edge, or just past it's hardiness zone. One say's zone 5 and the other, zone 4. How did you care for it during the winter, and how severe was your winter?

You can divide it, but it's best to do it in Spring, which may be now, in your zone. It's a cool-season grass, which means it should be in active growth now.

Sorry, not able to provide a pic.

I bought it last spring at a nursery. Was a good size plant at the time of purchase. I had read about it and seen pictures of it in Ambergate Garden's catalog and GardenGate Magazine. Ambergate Gardens (which is located about 3 1/2 hrs east of my location) said they have had good luck with the plant's hardiness. Soooo, thought I would give it a try.
We had a rather mild winter here---2-3 inches of snow cover, at times (snow, melt, snow, melt). Much of the winter went without snowcover. We had a total of 11 inches of snow this past winter. There was a report that perennials may take a hit because of our goofy winter. I expected to take a hit with a number of plants (including the purple moor grass), but, came out pretty good. The plants that I seem to have lost are the hakone grass 'Aureola' and my Endless Summer hydrangea---those kinda bummed me out.

Anyway, will keep an eye on my purple moor grass, just to make sure nothing else is going on there. Doesn't appear to be sickly---maybe it's just the warm, cool/cold,warm, cool, periods of spring that have thrown it off a bit.

I see quite a few plants have some yellow on them. We haven't had much sun the past couple of weeks.

Thanks for the help.