to NGA, Jean!
That species is not extremely cold tolerant and one source of info says it can tolerate 10° or lower. I remember one winter, it got down to 5° (very unusual!) and there was severe die back to the widespread and numerousTexas Mountain Laurel plants in this area. I'm not sure if all of them survived, but I remember seeing some plants growing back up from a bit above the ground level, others did a little bit better. I don't know how cold your winters get, but please keep that in mind.
