Is this a weed, or some kind of ornamental grass?
I'm in Harrisburg, PA. I have 2 spots where this grass looking plant has come up. I don't know what it is or where it came from... 1 of them did just put out a kind of flower (not terribly attractive, but maybe it helps someone tell me what this thing is). It looks like in a decent sized clump this might be nice (or as/if it gets bigger), so I don't want to rip it out or move it till I get some idea what it is if it's something worth keeping.
Here is a link that might be useful: unknown plant/weed