Q.Sick Holly
My holly had some leaves turning brown which I pruned. Now I see the bark looks sick?? Is this root rot? Should I cut the whole thing down or wait until spring?

Certified GKH Gardening Expert
Unfortunately, your photos did not come through. I am unable to see the damage. It does sound quite a bit like root rot, but it could be canker, as well. You may be able to treat some with a fungicide, but it will not likely cure the issue at hand. Destroying the shrubs may be the best option for the long run.
https://www.gardeningknowhow.com/plant-problems/disease/root-rot-in-garden-plants.htm
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm