My assumption but if you splice two together and it takes hold each tip will continue to grow based on its own genetic code. I think you just might end up with a big graft scar. However, I am not speaking from any grafter experience and would encourage experimenting. I guess the good news would be that you know it will either be white, yellow or nothing. If you choose to do it good luck and post pictures.

thanks kms2. I like to experiment and thought of doing this before I prune their limbs harder. Wonder if the blooms would be varied like mottled yellow and white then...? roxanne

Rox, I don't think they would be a combination. Each branch would have its own code and would bloom the color of its original parent. I have seen multi grafts onto the same plant to give it different blooms at plant shows. I'm not a fan but it might be very unique to someone else.

I am in full agreement on experimenting and new ideas/techniques. How can we possibly expect that all is known or understood about growing Plumerias in the ground or in containers? There is always more to know.

mahalo...roxanne