Maybe I'm dense or something but I'm still not understanding the benefit of all that work in grafting a Plumeria if it's just to be a 'year ahead' of a simple rooting.
When I bought a 'grafted' gardenia I was told it was grafted because the variety of the root stock was hardy and disease resistant, and it was grafted to a scion (the top part, right?) variety that had bigger, more fragrant flowers.....so I understand that, it makes sense to me. Grafting is done to make the whole plant hardier and give it great flowers...
Back to the Plumeria...is it done simply to multiply the plants? If the root stock isn't growing the way you want it to...why would you graft something else to it...and why wouldn't it 'stunt' the growth of what you graft to it? Does the scion fundamentaly change the root stock so it will grow better?
Sorry, I'm still confused!