it is amazing i tell people all the time that plumeria will bloom with out being planted or at least no roots. leaves that shows roots starting!! and as long as you have it in very well draining soil and its warm it will be ok. i like to make sure its in the sun and a good air circulation so it doen't stay wet to long!! good luck!!
do you have other plumeria? i want dragon fruit need to start looking soon for some cuttings/plants
mike