Hi Wood1988, again I encourage you to create a new thread in the Sundew forum when you have questions. I get alerts for this thread now so I saw this
I guess I'm not understanding what you mean by rhizome. D. capensis does make a sort of tap root, a thicker chunk of root from which smaller roots branch off, is that what you mean? Rhizomes (AFAIK) are runners that come from the plant to form new plants; they are basically underground stems. I know King Sundews make them but I don't know that Cape sundews do.
Cape sundews can make new plantlets from any bit of root, so whatever you mean, I think the answer is yes
Here's some info with some options for whatever root chunks you have http://www.growsundews.com/sundews/Prop ... t_Cuttings