Hi, I have what appears to be a dead Sky Pencil Holly. Went in last year and did great all spring/summer even flowered. Made it through the winter looking green but as of Spring things have taken a turn for the worse. I was considering if there was a way to determine if there was any life left in this thing I could container it and put something else in it’s spot but unclear how to go about doing this? Do I dig up the root ball and look for rot or something and then cut thid thing way back?