Remember, Hetty, I live in NE Mississippi with numerous heavy frosts and lows into the mid-teens. All my plumeria are inside for 4 or so months, dormant. They will never become trees, at least not for me.
I still haven't taken those pictures. I spent the last hour watering all my tropical plants outside and in the greenhouses. Hetty, if I were to take cuttings of these grafted 'Scott Pratt' "tops", how far below the graft site should I cut? How soon after the grafts have "taken" would you advise taking cuttings? My thought is to take the cuttings (whenever?) and then use those same root stocks to graft new plants, perhaps 'Scott Pratt' but more likely other varieties, such as 'Rose Red', ''Mareno Rainbow', or 'Honey Queen'.
P. S. My thirst for knowledge never seems to end, does it? Sorry about all my questions over the last couple of years. That's what you get for being an expert! LOL
Ken