Question
We live in NC and recently planted a boxwood hedge at the front of our lawn
near the sidewalk. We dug up the soil, mixed additional soil in and left enough
space for root growth.  Out of 21 planted over 4 months ago, 6 are now yellow,
brown.  We dug up 2 to make sure the roots were ok, one of the ones we dug up
had nut grass growing through the roots, but otherwise looked ok.  The other
root system was allright as well.  We rototilled the area of the hedge line
nearer the house and found tons of nutgrass invading into the boxwood area.  How
do I kill this nutgrass without damaging the boxwoods anymore?  (which by the
way we aren't entirely sure why they are not doing well).  Thank you

Answer
Lisa,
To control the nutgrass, I would recommend using a material called Manage. This herbicide will only effect the nutgrass and nothing else.
As far as the poor condition of the boxwoods, have you been watering them regularly? New transplants require almost daily watering (unless it rains).
Have you fertilized them? If so, did you use a high nitrogen fertilizer? High nitrogen can burn the tender roots of plants. This is why I always recommend low nitrogen fertilizers (something like a 5-10-10).
They are definately in transplant shock and need some extra care.
Good luck.
Ed Gulliksen