What kind of plant is this?

[ChantalA]

We moved into our house over the summer and this winter, these shrubs have clearly died. Would anyone happen to know what kind of plant this is and if I need to prune, refertilize or dig up and start over? Thank you! The curb appeal is killing me.

 

[Owdboggy]

It looks like one of the big grasses. I would cut it back to ground level and wait and see if it grows again in spring.