It's an interesting novelty where cold/wet winters keep it from being a horrible nuisance. Otherwise, it's a horrible nuisance. The (yes they're pretty) berries sprout new (thorny, perennial) plants that are impossible to pull because of those tuberous roots you mention, Cindi. (Always love to hear from someone who repots plants though, cheers & more power to that!) I fear from the adjacent Ruellia that the A-fern is hardy where Saradl is.