floresdele. You need to go to your profile and update it, stating where you are located. Location is so important when answering many of the questions.
Certainly, plumeria can be rooted from cuttings. I do several dozen every year. For me at least, that window-of-opportunity has passed. I don't begin rooting cuttings after September 15. I'm in NE Mississippi and my plumeria will begin to go dormant in about six weeks.