If Transplanted Hair in the Scalp Doesn't Grow, is the Hair Dead or Maybe Packed Too Closely to Grow?

If your grafts are not growing by 6 months it is unlikely they will grow. Over packing  and improper handling can do this.

In most cases 90% or more of transplanted hair should grow.  There is the rare case, however, for some unknown reason the hair fails to grow after the transplant.  Usually the cause is unknown.  There is the other cause that the original grafts when they were cut didn't contain the critical units for successful implantation.