Monkey Puzzles (Araucaria araucana) are trees so they will grow bark. Each branch will last about 15 years and, in a few years, the trunk will start leaking resin. Pokey and sticky!
Depending upon cold, your tree could live outside in a sheltered spot year round. Mine is on the east wall of my house (the storms come from the west and north) in about a 15 gallon pot. I cover it a couple times a winter (low temps about 10 F).