thats great if you can get it rooted you should have no problem with growing them....i say they are 80% same as Adeniums they are so much alike it is unbelievable. If you want to add to your collection of either im rooting about 150 plumeria cuttings now and will have about 100 adeniums for sale and seeds from both
keep it up i think you will get that plumie growing like crazy in about 3-4 weeks!!
mike
