Mystery grass in my yard
This hot weather grass grows on a dry sunny corner of my yard. It has a yellowish cast to the green. It does not burn up. It does not spread with horizontal rhizomes, pulls up individually. I'm wondering what it is, should I pull it up or let it grow. Seeding does poorly in this corner, even with lots of watering, but these guys do fine.
Hartford County Connecticut
This sounds like yellow nutsedge, sometimes called nutgrass.
Here is our page about it: http://www.extension.umd.edu/hgic/yellow-nutsedge
We can't recommend chemical herbicides across state lines, so you should contact your local Extension for control options.