I did an experiment to see if you really could graft plumeria to an adenium like I had read about. I could not find any pictures on the web so I decided to try for myself. I grafted two, one took and the other one rotted at the connection point. I used celadine for the experiment because that is all I had. Now that I have seen that it works I would like to find a good dwarf plumeria to graft on an adenium for a small sized plumeria tree with a caudex. Any ideas or leads on where to purchase?

The most common dwarf plumeria is P. obtusa 'Dwarf Pink Singapore'. But look at Jungle Jack's - they have a lot of new cultivars that are dwarf or super compact.

Thank you Hetty. I did stumble across Jungle Jacks the other night looking for info. They have a really large selection for minis and compacts. Super pricy though! I am having a plant sale on the 29th and if all goes well I will use some of the funds I make to buy one of his. JJ's has really good reviews of his products from many people on multiple sites. Have you purchased from them before? I like that they are already rooted so not as much risk involved as getting cuttings through mail and having to root them.

I am thinking about Jacks mini white or mini me. Do have experience with either of these?

Yes, Mini Me is lovely; it has more color than Mini White. My preference would be for Mini-Me. And yes, I have extensive experience with JJ's plants.
The one thing I would do for sure is repot the plant in the spring. Their mix tends to be VERY light, because they root them in the pots they sell them in.

Ok. Mini Me it is! Thanks for the help. I do prefer color over white but also want great scent. So, one last question. How do you rate the scent for mini me compared to say Celadine?

Very few plumeria can top the scent of Celadine....