The Cold Killed My Devils Backbone. Do I Dig It Up Or Will It Grow Back?
It's black on top but the bottom is brownish-green.
Certified GKH Gardening Expert
Unfortunately, your photo did not come through. If you see green, it might be worth saving. However, there are a few things to keep in mind.
These plants are only suitable for zones 9 and 10. The USDA zone that you have provided is invalid, so I can't see what the temperatures are like in your area. Likely, if you are seeing damage, then it is not hardy in your area.
Digging a plant up that is already damaged will likely kill it. If this were in container, and able to be moved without disturbing the roots, then there is a better chance that the plant can survive. In ground, there will be so much disturbance that it will add heavily to the stress of the plant.
Still, it can't hurt to try to save it. The worst that can happen at this point is that the plant dies, which will happen if left in ground, as well.
This article will help you to care for the plant: https://www.gardeningknowhow.com/houseplants/devils-backbone/devils-backbone-plant.htm