I've had this plant for about 10 years and have never known what it is. It started off as a singular column then added the "arms" about 6 to 7 years ago. It's trying to grow another one (closeup) but it's growing against itself. It has never flowered. I believe a coworker brought it from Del Rio, Texas but I'm not even sure if it was a local plant or what. It's about 14" tall now and started out at about 4" or 5" so it's really slow growing. Just want to give it the care it deserves and would like to know how big it will get.