I have a Theresa Bugnet rose, it's about 14+ years old. A few years ago, another auxiliary plant came up about 2' feet away...it is an identical plant. I have left the plant in place, but it has gotten so large it is not interfering with other plants in that bed. Can this 'sister' plant be successfully cut away and transplanted without harming the 'mother' plant? I was in that garden this past Sunday on our first warm day of the spring and believe another 'sister' has appeared...that makes 2. Also, some canes have gotten more thorny and almost hairlike, is this the sign the plant is failing? Last summer, the blooms on both plants were just spectacular and no other issues, other than a few Japanese beetles, were noted. This is my longest surviving rose in this bed..funny I originally purchased the rose bare root from Kmart for $1.98. It has outshown all others including Knock-outs and Carpet roses that were planted in the same rose bed.