How late in season to root cuttings?

I'm still learning a lot about plumeria. I have some of my own plants that are getting a little tall and not branching that should be cut and I am thinking about acquiring a couple more cuttings. I live in the Tampa Bay area of Florida and was wondering how late in the season should I take cuttings from my own plumerias and when should I cut-off trying to root anything for this season?
Thank you for your help.
Vivian

Vivian, I am still happily rooting away; my rule of thumb is that until the nights go consistently below 60 (in the distant future for us...) I can still root easily.
Ideal time of year for rooting is early spring, in my opinion.