Pruden's Purple stem problem
We have a Pruden's Purple that has developed scarring around the base of the plant.
We purchased this plant from a nursery, origanlly it had another small plant beside it. It (the smaller plant) was affected far more than the larger one we have left. The smaller one was weeping and quite obviously distressed. We culled it this morning and left the bigger one. When my husband was examing it this morning he noticed several what appeared to be millipedes (greyish hard shell, many legs and coiled up like a spring when disturbed) critters feeding on the wounded area (or at least they were stuck to the wound and no where else on the plant). The larger plant now looks like this...
Any thoughts? I wonder if the critters (if that's what it is) will now attack the larger plant? Is there anything we can do? Will the plant survive?